Studies of Properties of Derivatives of 1-Phospha-5-Aza-2,6,9-Trioxabicyclo[3.3.3]

Total Page:16

File Type:pdf, Size:1020Kb

Studies of Properties of Derivatives of 1-Phospha-5-Aza-2,6,9-Trioxabicyclo[3.3.3] Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations 1983 Studies of properties of derivatives of 1-phospha-5-aza-2,6,9-trioxabicyclo[3.3.3]undecane and structurally related molecules Leslie Earl Carpenter II Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/rtd Part of the Inorganic Chemistry Commons Recommended Citation Carpenter, Leslie Earl II, "Studies of properties of derivatives of 1-phospha-5-aza-2,6,9-trioxabicyclo[3.3.3]undecane and structurally related molecules " (1983). Retrospective Theses and Dissertations. 8457. https://lib.dr.iastate.edu/rtd/8457 This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. INFORMATION TO USERS This reproduction was made from a copy of a document sent to us for microfilming. While the most advanced technology has been used to photograph and reproduce this document, the quality of the reproduction is heavily dependent upon the quality of the material submitted. The following explanation of techniques is provided to help clarify markings or notations which may appear on this reproduction. 1. The sign or "target" for pages apparently lacking from the document photographed is "Missing Page(s)". If it was possible to obtain the missing page(s) or section, they are spliced into the film along with adjacent pages. This may have necessitated cutting through an image and duplicating adjacent pages to assure complete continuity. 2. When an image on the film is obliterated with a round black mark, it is an indication of either blurred copy because of movement during exposure, duplicate copy, or copyrighted materials that should not have been filmed. For blurred pages, a good image of the page can be found in the adjacent frame. If copyrighted materials were deleted, a target note will appear listing the pages in the adjacent frame. 3. When a map, drawing or chart, etc., is part of the material being photographed, a definite method of "sectioning" the material has been followed. It is customary to begin filming at the upper left hand comer of a large sheet and to continue from left to right in equal sections with small overlaps. If necessary, sectioning is continued again—beginning below the first row and continuing on until complete. 4. For illustrations that cannot be satisfactorily reproduced by xerographic means, photographic prints can be purchased at additional cost and inserted into your xerographic copy. These prints are available upon request from the Dissertations Customer Services Department. 5. Some pages in any document may have indistinct print. In all cases the best available copy has been filmed. Universi^ Miomlrns International 300 N. Zeeb Road Ann Arbor, Ml 48106 8407056 Carpenter, Leslie Earl, II STUDIES OF PROPERTIES OF DERIVATIVES OF 1-PHOSPHA-5-AZA-2,6,9- TRIOXABICYCLO(3.3.3)UNDECANE AND STRUCTURALLY RELATED MOLECULES Iowa State University PH.D. 1983 University Microfilms Intornâtional aOON.Zeet Road, Ann Arbor, Ml 48106 PLEASE NOTE: In all cases this material has been filmed in the best possible way from the available copy. Problems encountered with this document have been identified here with a check mark V . 1. Glossy photographs or pages 2. Colored illustrations, paper or print 3. Photographs with dark background 4. Illustrations are poor copy 5. Pages with black marks, not original copy 6. Print shows through as there is text on both sides of page 7. Indistinct, broken or small print on several pages l/^ 8. Print exceeds margin requirements 9. Tightly bound copy with print lost in spine 10. Computer printout pages with indistinct print 11. Page(s) lacking when material received, and not available from school or author. 12. Page(s) seem to be missing in numbering only as text follows. 13. Two pages numbered . Text follows. 14. Curling and wrinkled pages 15. Other University Microfilms International Studies of properties of derivatives of l-phospha-5-aza-2,6,9-trioxabicyc1o[3.3.3]undecane and structurally related molecules by Leslie Earl Carpenter II A Dissertation Submitted to the Graduate Faculty in Partial Fulfillment of the Requirements for the Degree of DOCTOR OF PHILOSOPHY Department: Chemistry Major: Inorganic Chemistry Approved: Signature was redacted for privacy. Signature was redacted for privacy. For tne Major uepartm^ Signature was redacted for privacy. Iowa State University Ames, Iowa 1983 ii TABLE OF CONTENTS Paae ABSTRACT xx PART I: CRYSTAL AND MOLECULAR STRUCTURE OF 3,9-DIMETHOXY- 2,4,8,lO-TETRAOXA-3,9-DIPHOSPHA SPIRO[5.51UNDECANE 1 INTRODUCTION 2 EXPERIMENTAL 4 RESULTS AND DISCUSSION H PART II: CRYSTAL AND MOLECULAR STRUCTURE OF 2-0X0-2(BIS-(g- CHL0R0ETHYL)AMIN0)-4,6-DIMETHYL-l,3,2- OXAZAPHOSPHOR INANE 14 INTRODUCTION 15 EXPERIMENTAL 18 RESULTS AND DISCUSSION 28 PART III: BICYCLIC TO TRICYCLIC TRANSFORMATIONS IN 1-PHOSPHA- 5-AZA-2,6,9-TRI0XABICYCL0[3.3.3 lUNDECANE SYSTEMS 33 INTRODUCTION 34 EXPERIMENTAL 36 . RESULTS AND DISCUSSION 48 PART IV: 1^0 NMR OF PHOSPHITES AND PHOSPHATES 68 INTRODUCTION 69 EXPERIMENTAL 74 RESULTS AND DISCUSSION 83 PART V: ATTEMPTED SYNTHESIS OF "ATRAPE" CAGES 118 INTRODUCTION 119 EXPERIMENTAL 120 RESULTS AND DISCUSSION 127 i i i PART VI: PROTONATION OF l-PH0SPHA-5-AZA-2,6,9- TRIOXABICYCLO[3.3.3 lUNDECANE 129 INTRODUCTION 130 EXPERIMENTAL 131 RESULTS AND DISCUSSION 135 SUMMARY 137 REFERENCES 138 ACKNOWLEDGEMENTS 154 iv LIST OF TABLES Page Table 1. Calculated and observed structure factors for 3,9-dimethoxy-2,4,8,10-tetraoxa-3,9-diphospha-spiro [5.5]undecane 6 Table 2. 3,9-Dimethoxy-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5]undecane final atomic and positional parameters 8 Table 3. 3,9-Dimethoxy-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5]undecane final thermal parameters 9 Table 4. 3,9-Dimethoxy-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.51undecane intramolecular bond distances and angles 10 Table 5. Calculated and observed structure factors for 2-Oxo-2-(b i s -(6-ch1oroethy1)ami no)-4,6-d imethy1 - 1,3,2,-oxaza-phosphorinane 20 Table 5. 2-0xo-2-(bis-(6-chloroethyl)amino)-4,6-dimethy^- l,3,2-oxaza-phosphorinane final atomic and positional parameters 24 Table 7. 2-0xo-2-(bis-(G-chloroethyl)amino)-4,6-dimethyl- 1,3,2-oxaza-phosphorinane final thermal parameters 25 Table 8. 2-0xo-2-(bis-(6-chloroethyl)amino)-4,6-dimethyl- 1,3,2-oxaza-phosphorinane intramolecular bond distances and angles 26 Table 9. 2-0xo-2-(bis-(6-chloroethyl)amino)-4,6-dimethyl- 1,3,2-oxaza-phosphorinane torsional and interplanar angles 27 Table 10. and NMR data for the protonation of phosphatrane oxide (20) with trifluoroacetic acid — 52 Table 11. and ^^P NMR data for the protonation of phosphatrane sulfide (21) with trifluoroacetic acid 77 58 V Table 12. and NMR data and Vn_Q for complexes of phosphatrane oxide with BFo, EtoSiClO^ and Zn(C104)2 64 Table 13. IR and UV data for cobalt complexes of phosphates... 65 Table 14. ^^0 NMR chemical shifts and coupling constants of phosphites 84 Table 15. ^^0 NMR chemical shifts and coupling constants of phosphates 91 Table 16. and NMR data for cyclic phosphites 98 Table 17. and NMR data for cyclic phosphates 105 Table 18. Dipole moments of cyclic phosphates 106 Table 19. Slopes, intercepts, and correlation coefficients for plots of (S^'O versus <S^^P for phosphates 112 VI LIST OF FIGURES Page Figure 1. Computer drawing of 3,9-dimethoxy-2,4,8,10-tetraoxa- 3,9-diphosphaspiro [5.5]undecane 12 Figure 2. Computer drawing of 2-oxo-bis(2-B-(chloroethyl) ami no)-4,6-dimethy1-1,3,2-oxazaphosphor inane 29 Figure 3. NMR spectrum of methylene group adjacent to nitrogen in initial attempt at protonation of phosphatrane oxide (^) 49 Figure 4. NMR spectrum of monoprotonated phosphatrane oxide (20) 53 Figure 5. NMR spectrum of diprotonated phosphatrane oxide (^) 55 Figure 6. NMR spectrum of phosphatrane sulfide as a function of temperature 60 Figure 7. Plot of ^^P chemical shift versus the ^^0 chemical shift of the phosphoryl oxygen of phosphates 110 Figure 8. Plot of ^^0 chemical shift of the phosphoryl oxygen of phosphates versus Jpse of the corresponding selenophosphates. ,v 114 Figure 9. Plot of ^^P chemical shift of cyclic phosphates against Jpcg of the corresponding selenophosphates 116 VI1 Compounds discussed in thesis: 0 ' 0 vi i i V- OMe OMe (C1CH2CH2)2N. H P- CICHgCHgNx^/^N 6 CNz 0 CH, Cl (ClCH2CH2)2N\p.^ -N- CH. CH. Cl ix MeOjSOCHjCHjN 12 CH, CH, CI 13a N(CH2CH2C1)2 13b (CH2CH2C1)2N>^p'^[} 0— 14 o=^//!i- I N(CH2CH2C1)2 Ph Me,N 15 0^ Xn/-" Se A- 15 xi 20 0=P, 'oS». / 21 S-»P 0 22 Se=P. 'oS, / 23 ^ \ï / 24 (OOgMoP^ '0>S xn /" 25 (OOjWP 25 27 PtCljCNCPfDj 28 P(0Me)3 P(0Et)3 30 P(0Ph)3 31 P(0-i-Pr)3 32 PCO-i-Bujj 33 I OMe 34 OEt X111 OPr 0-i-Pr I 0-i-Bu OPhI OMe xiv OMe 42a L OMe MeO. /^O- 42b >P 43a I OMe OMe XV 0 45 P 1 OMe 46 47 48 49 OP(OMe), 50 OP(OEt), 51 OP(O-i-Pr) 52 OP(O-i-Bu) xvi OEt I OMe xvi i MeO\ / 58b I V 0^/ 59a OMe 59b 60 OMe 61 \ //»• 62a OMe XVI1i MeO.
Recommended publications
  • Lactide/^Caprolactone Polymerization Behavior of Monomeric Aryloxytitanatrane
    698 Bull. Korean Chem. Soc. 2007, Vol. 28, No. 4 Notes Synthesis, X-ray Structure, and /-Lactide/^Caprolactone Polymerization Behavior of Monomeric Aryloxytitanatrane Sang-deok Mun, Younjin Hong, and Youngjo Kim* Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk 361-763, Korea. *E-mail: 가[email protected] Received February 2, 2007 Key Words : Titanatrane, Mononuclear, Ring opening polymerization, Polylactide, Polycaprolactone The chemistry of atrane coordinated by the central nitro­ polymerization (ROP) of l-lactide (l-LA) or ^caprolactone gen atom as well as all three arms of deprotonated triethanol­ 任-CL) are now one of popular research fields in the homo­ amine ligand, imino-2,2',2''-triethanolate, has been inten­ geneous catalysis. In this regard, a new mononuclear tita- sively studied over the past few decades and its examples are natrane obtained was used as a catalyst for the ROP of l-LA now known across the periodic table.1 Most studies have and £-CL. focused on the use of main group elements such as silicon, The treatment of Ti(O-i-Pr)4 with 1 equivalent of 2,6-di- phosphorus, aluminum, and tin in the formation of atrane.1 tert-butylphenol and 1 equivalent of triethanolamine in THF In view of the well known significant number of similarities gave, after workup, novel mononuclear titanatranes 1 as in the chemistries of tin and titanium, relatively few reports orange-yellow crystals in 81% isolated yield. After recrystal­ have appeared concerning metallic titanatranes with a lization using toluene, 1 was used as a catalyst for making transannular N—Ti bond from bridgehead N atom in polylactide (PLA) and polycaprolactone (PCL).
    [Show full text]
  • Approach to Site-Selective Protein Modification JUSTIN M
    A “Tag-and-Modify” Approach to Site-Selective Protein Modification JUSTIN M. CHALKER, GONC-ALO J. L. BERNARDES, AND BENJAMIN G. DAVIS* Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom RECEIVED ON FEBRUARY 27, 2011 CONSPECTUS ovalent modification can expand a protein's functional capacity. Fluorescent or radioactive labeling, for instance, allows C imaging of a protein in real time. Labeling with an affinity probe enables isolation of target proteins and other interacting molecules. At the other end of this functional spectrum, protein structures can be naturally altered by enzymatic action. ProteinÀprotein interactions, genetic regulation, and a range of cellular processes are under the purview of these post- translational modifications. The ability of protein chemists to install these covalent additions selectively has been critical for elucidating their roles in biology. Frequently the transformations must be applied in a site-specific manner, which demands the most selective chemistry. In this Account, we discuss the development and application of such chemistry in our laboratory. A centerpiece of our strategy is a “tag-and-modify” approach, which entails sequential installation of a uniquely reactive chemical group into the protein (the “tag”) and the selective or specific modification of this group. The chemical tag can be a natural or unnatural amino acid residue. Of the natural residues, cysteine is the most widely used as a tag. Early work in our program focused on selective disulfide formation in the synthesis of glycoproteins. For certain applications, the susceptibility of disulfides to reduction was a limitation and prompted the development of several methods for the synthesis of more stable thioether modifications.
    [Show full text]
  • Electron Transfer and Modification of Oligosilanylsilatranes and Related
    This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. Article pubs.acs.org/Organometallics Electron Transfer and Modification of Oligosilanylsilatranes and Related Derivatives † ‡ § Mohammad Aghazadeh Meshgi, Judith Baumgartner,*, Viatcheslav V. Jouikov,*, † and Christoph Marschner*, † Institut für Anorganische Chemie, Technische Universitaẗ Graz, Stremayrgasse 9, 8010 Graz, Austria ‡ Institut für Chemie, Universitaẗ Graz, Stremayrgasse 9, 8010 Graz, Austria § UMR 6226, Chimie et Photonique Moleculaires,́ Universitéde Rennes 1, 35042 Rennes, France *S Supporting Information ABSTRACT: Several silatranyl -substituted oligosilanes were prepared starting from bis(trimethylsilyl)silatranylsilanide. Electrochemical and theoretical investigations of some oligosilanes revealed that electrooxidation occurs by formation of a short-lived cation radical. This species undergoes structural relaxation to form a pair of conformers, with endo and exo relationships with respect to the Si−N interaction. Reaction of a 1,4-disilatranyl-1,4-disilanide with 1,2- dichlorotetramethyldisilane gave a mixture of cis and trans diastereomers of a cyclohexasilane with the trans isomer showing a diminished Si−N distance. ■ INTRODUCTION along the Si−N dative bond reflects the nature of Si−N − Among hypercoordinated silicon compounds silatranes (Figure bonding. In fact the Si N bonding neither is covalent nor is − 8 1) occupy a prominent position.1 4 The suffix “atrane” was based on intermolecular charge transfer. What happens with this unusual bond upon electron withdrawal, for instance during electrooxidation, is of a great interest (for classical bonds see ref 9) but is not known so far.
    [Show full text]
  • Ncomms12703.Pdf
    ARTICLE Received 17 Feb 2016 | Accepted 26 Jul 2016 | Published 2 Sep 2016 DOI: 10.1038/ncomms12703 OPEN Chemoselective synthesis and analysis of naturally occurring phosphorylated cysteine peptides Jordi Bertran-Vicente1, Martin Penkert1,2, Olaia Nieto-Garcia1,2, Jean-Marc Jeckelmann3, Peter Schmieder1, Eberhard Krause1 & Christian P. R. Hackenberger1,2 In contrast to protein O-phosphorylation, studying the function of the less frequent N- and S-phosphorylation events have lagged behind because they have chemical features that prevent their manipulation through standard synthetic and analytical methods. Here we report on the development of a chemoselective synthetic method to phosphorylate Cys side-chains in unprotected peptides. This approach makes use of a reaction between nucleophilic phosphites and electrophilic disulfides accessible by standard methods. We achieve the stereochemically defined phosphorylation of a Cys residue and verify the modification using electron-transfer higher-energy dissociation (EThcD) mass spectrometry. To demonstrate the use of the approach in resolving biological questions, we identify an endogenous Cys phosphorylation site in IICBGlc, which is known to be involved in the carbohydrate uptake from the bacterial phosphotransferase system (PTS). This new chemical and analytical approach finally allows further investigating the functions and significance of Cys phosphorylation in a wide range of crucial cellular processes. 1 Leibniz-Institut fu¨r Molekulare Pharmakologie (FMP), Robert-Ro¨ssle-Str. 10, D-13125 Berlin, Germany. 2 Humboldt-Universita¨t zu Berlin, Institut fu¨r Chemie, Brook-Taylor-Str. 2, D-12489 Berlin, Germany. 3 Institute of Biochemistry and Molecular Medicine, University of Bern, 3012 Bern, Switzerland. Correspondence and requests for materials should be addressed to C.P.R.H.
    [Show full text]
  • Template for Electronic Submission to ACS Journals
    Understanding the role of Ti-rich domains in the stabilization of gold nanoparticles on mesoporous silica-based catalysts Alaina Moragues a, Begoña Puértolas b, Álvaro Mayoral c,d, Raúl Arenal c,d, Ana B. Hungría e, Sonia Murcia-Mascarós a, Stuart H. Taylor f, Benjamín Solsona g,*, Tomás Garcíab,*, Pedro Amorós a,* a Institut de Ciència dels Materials, Universitat de València, P.O. Box 22085, 46071 Valencia, Spain. b Instituto de Carboquímica (ICB-CSIC), C/ Miguel Luesma Castán 4, 50018 Zaragoza, Spain. c Laboratorio de Microscopias Avanzadas (LMA), Instituto de Nanociencia de Aragon (INA), Universidad de Zaragoza, Mariano Esquillor, 50018 Zaragoza, Spain. d Fundación Agencia Aragonesa para la Investigación y el Desarrollo (ARAID), María de Luna 11, 50018 Zaragoza, Spain. e Departamento de Ciencia de Materiales, Ingeniería Metalúrgica y Química Inorgánica, Universidad de Cádiz, Campus Río San Pedro, 11510 Puerto Real, Spain. f Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, CF10 3AT Cardiff, United Kingdom. g Departamento de Ingenieria Quimica, Universitat de València, Avenida de la Universitat, 46071 Valencia, Spain. *Corresponding authors at: Institut de Ciència dels Materials, Universitat de València, P.O. Box 22085, 46071 Valencia, Spain (Pedro Amorós). E-mail addresses: [email protected], [email protected], [email protected] 1 ABSTRACT The preparation and stabilization of gold nanoparticles with a precise control of size and dispersion is highly attractive for a variety of applications, and a key aspect is thermal stability of the nanoparticles. This paper focuses on understanding the effect of TiO2-based nanodomains, dispersed on mesoporous silicas, and how they control gold nanoparticle stability.
    [Show full text]
  • Oxatrane Is a Parent Compound of a New Atrane Family: Crystal and Molecular Structure of Triethanolamine NOxide Academician M
    ISSN 00125008, Doklady Chemistry, 2014, Vol. 458, Part 1, pp. 172–175. © Pleiades Publishing, Ltd., 2014. Original Russian Text © M.G. Voronkov, E.A. Zel’bst, A.D. Vasil’ev, M.S. Molokeev, G.A. Kuznetsova, 2014, published in Doklady Akademii Nauk, 2014, Vol. 458, No. 3, pp. 287–290. CHEMISTRY Oxatrane Is a Parent Compound of a New Atrane Family: Crystal and Molecular Structure of Triethanolamine NOxide Academician M. G. Voronkova †, E. A. Zel’bstb, A. D. Vasil’evc,d, M. S. Molokeevc,d, and G. A. Kuznetsovaa Received March 27, 2014 DOI: 10.1134/S0012500814090031 Tertiary amine Noxides of general formula A particular interest in tertiary amine Noxides has + increased in recent years. Triethanolamine Noxide, O ⎯ NR3 (previously O=NR3 or O → NR3) continue to attract interest of synthetic, theoretical, and applied which was considered to have structure chemists. They are already used in cosmetics, as bio O=N(CH2CH2OH)3 [3], was ascribed to them by medical agents, and as oxidants in a number of organic analogy, but its molecular structure was not estab reactions (catalytic epoxidation and dihydroxylation lished. Therefore, we determined the structure by X of alkenes, catalytic oxidation of alcohols, etc.) [1, 2]. ray diffraction, presuming that the oxide oxygen atom The most general method of their synthesis is the oxi in this molecule is bound to the nitrogen atom and sur dation of tertiary amines with hydrogen peroxide, per rounded by three CH CH OH groups like hydrogen oxy acids, dioxiranes, and oxaazapyridines [1]. 2 2 atom in protatranes [4]. The obtained data proved to Triethanolamine Noxide (TEA) formulated as be unexpected and, nonetheless, allowed us to name + O –N (CH2CH2OH)3 and obtained by the oxidation TEA Noxide as oxatrane (OA) by analogy with pro of triethanolamine with hydrogen peroxide [3] is also tatranes, Fig.
    [Show full text]
  • Organophosphate Insecticides
    CHAPTER 4 HIGHLIGHTS Organophosphate Insecticides Acts through phosphorylation of the acetylcholinesterase enzyme Since the removal of organochlorine insecticides from use, organophosphate at nerve endings insecticides have become the most widely used insecticides available today. More Absorbed by inhalation, than forty of them are currently registered for use and all run the risk of acute ingestion, and skin and subacute toxicity. Organophosphates are used in agriculture, in the home, penetration in gardens, and in veterinary practice. All apparently share a common mecha- Muscarinic, nicotinic & CNS nism of cholinesterase inhibition and can cause similar symptoms. Because they effects share this mechanism, exposure to the same organophosphate by multiple routes or to multiple organophosphates by multiple routes can lead to serious additive Signs and Symptoms: toxicity. It is important to understand, however, that there is a wide range of Headache, hypersecretion, toxicity in these agents and wide variation in cutaneous absorption, making muscle twitching, nausea, specific identification and management quite important. diarrhea Respiratory depression, seizures, loss of consciousness Toxicology Miosis is often a helpful Organophosphates poison insects and mammals primarily by phosphory- diagnostic sign lation of the acetylcholinesterase enzyme (AChE) at nerve endings. The result is a loss of available AChE so that the effector organ becomes overstimulated by Treatment: the excess acetylcholine (ACh, the impulse-transmitting substance) in the nerve Clear airway, improve tissue ending. The enzyme is critical to normal control of nerve impulse transmission oxygenation from nerve fibers to smooth and skeletal muscle cells, glandular cells, and Administer atropine sulfate autonomic ganglia, as well as within the central nervous system (CNS).
    [Show full text]
  • Asymmetric Synthesis of Organophosphates and Their
    ASYMMETRIC SYNTHESIS OF ORGANOPHOSPHATES AND THEIR DERIVATIVES Thesis Submitted to The College of Arts and Sciences of the UNIVERSITY OF DAYTON In Partial Fulfillment of the Requirements for The Degree of Master of Science in Chemistry By Batool J. Murtadha Dayton, Ohio May 2020 ASYMMETRIC SYNTHESIS OF ORGANOPHOSPHATES AND THEIR DERIVATIVES Name: Murtadha, Batool J. APPROVED BY: __________________________________ Jeremy Erb, Ph.D. Research Advisor Assistant Professor Department of Chemistry University of Dayton ___________________________________ Vladimir Benin, Ph.D. Professor of Chemistry Department of Chemistry University of Dayton ___________________________________ Justin C. Biffinger, Ph.D. Committee Member Assistant Professor Department of Chemistry University of Dayton ii © Copyright by Batool J. Murtadha All rights reserved 2020 iii ABSTRACT ASYMMETRIC SYNTHESIS OF ORGANOPHOSPHATES AND THEIR DERIVATIVES Name: Murtadha, Batool J. University of Dayton Advisor: Dr. Jeremy Erb Organophosphorus compounds (OPs) are widely used in the agricultural industry especially in the pesticide market. Phosphates play a huge role as biological compounds in the form of energy carrier compounds like ATP, and medicine as antivirals. OPs have become increasingly important as evidenced by the publication of new methods devoted to their uses and synthesis. These well-established studies lay the basis for industrial organic derivatives of phosphorus preparations. The current work explored methods of synthesizing chiral organophosphate triesters. We experimented with different processes roughly divided into either an electrophilic or nucleophilic strategy using chiral Lewis acids, organocatalysts (HyperBTM), activating agents, and chiral auxiliaries with the goal of control stereoselectivity. These methods were explored through the use of different starting materials like POCl3, triethyl phosphate, methyl phosphordichloradate, and PSCl3.
    [Show full text]
  • Environmental Health Criteria 63 ORGANOPHOSPHORUS
    Environmental Health Criteria 63 ORGANOPHOSPHORUS INSECTICIDES: A GENERAL INTRODUCTION Please note that the layout and pagination of this web version are not identical with the printed version. Organophophorus insecticides: a general introduction (EHC 63, 1986) INTERNATIONAL PROGRAMME ON CHEMICAL SAFETY ENVIRONMENTAL HEALTH CRITERIA 63 ORGANOPHOSPHORUS INSECTICIDES: A GENERAL INTRODUCTION This report contains the collective views of an international group of experts and does not necessarily represent the decisions or the stated policy of the United Nations Environment Programme, the International Labour Organisation, or the World Health Organization. Published under the joint sponsorship of the United Nations Environment Programme, the International Labour Organisation, and the World Health Organization World Health Orgnization Geneva, 1986 The International Programme on Chemical Safety (IPCS) is a joint venture of the United Nations Environment Programme, the International Labour Organisation, and the World Health Organization. The main objective of the IPCS is to carry out and disseminate evaluations of the effects of chemicals on human health and the quality of the environment. Supporting activities include the development of epidemiological, experimental laboratory, and risk-assessment methods that could produce internationally comparable results, and the development of manpower in the field of toxicology. Other activities carried out by the IPCS include the development of know-how for coping with chemical accidents, coordination
    [Show full text]
  • Biosensors for Detection of Organophosphate Exposure by New Diethyl Thiophosphate-Specifc Aptamer
    Biosensors for Detection of Organophosphate Exposure by New Diethyl Thiophosphate-Specic Aptamer Napachanok Mongkoldhumrongkul Swainson Kasetsart University - Bangkhen Campus: Kasetsart University Chonnikarn Saikaew Kasetsart University - Bangkhen Campus: Kasetsart University Kanyanat Theeraraksakul Kasetsart University - Bangkhen Campus: Kasetsart University Pongsakorn Aiemderm Kasetsart University - Bangkhen Campus: Kasetsart University Rimdusit Pakjira Department of Disease Control Charoenkwan Kraiya Chula: Chulalongkorn University Sasimanas Unajak Kasetsart University - Bangkhen Campus: Kasetsart University kiattawee choowongkomon ( [email protected] ) Kasetsart University https://orcid.org/0000-0002-2421-7859 Research Article Keywords: Aptasensor, organophosphate metabolites, diethyl thiophosphate, electrochemical impedance spectroscopy, capillary electrophoresis Posted Date: February 23rd, 2021 DOI: https://doi.org/10.21203/rs.3.rs-217995/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Version of Record: A version of this preprint was published at Biotechnology Letters on July 6th, 2021. See the published version at https://doi.org/10.1007/s10529-021-03158-2. Page 1/17 Abstract Objective An aptamer specically binding to diethyl thiophosphate (DETP) was constructed and incorporated in an optical sensor and electrochemical impedance spectroscopy (EIS) to enable the specic measurement of DETP as a metabolite and a biomarker of exposure to organophosphates. Results DETP-bound aptamer was selected from the library using capillary electrophoresis-systematic evolution of ligands by exponential enrichment (CE-SELEX). A colorimetric method revealed the aptamer had the highest anity to DETP with a mean Kd value (± SD) of 0.103 ± 0.014 µM. Changes in resistance using EIS showed selectivity of the aptamer for DETP higher than for dithiophosphate (DEDTP) and diethyl phosphate (DEP) which have similar structure and are metabolites of some of the same organophosphates.
    [Show full text]
  • NMR Studies of Phosphorus Ligand Complexes of Silver and Cobalt Steven Mark Socol Iowa State University
    Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations 1983 NMR studies of phosphorus ligand complexes of silver and cobalt Steven Mark Socol Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/rtd Part of the Inorganic Chemistry Commons Recommended Citation Socol, Steven Mark, "NMR studies of phosphorus ligand complexes of silver and cobalt " (1983). Retrospective Theses and Dissertations. 8962. https://lib.dr.iastate.edu/rtd/8962 This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. INFORMATION TO USERS This reproduction was made from a copy of a document sent to us for microfilming. While the most advanced technology has been used to photograph and reproduce this document, the quality of the reproduction is heavily dependent upon the quality of the material submitted. The following explanation of techniques is provided to help clarify markings or notations which may appear on this reproduction. 1.The sign or "target" for pages apparently lacking from the document photographed is "Missing Page(s)". If it was possible to obtain the missing page(s) or section, they are spliced into the film along with adjacent pages. This may have necessitated cutting through an image and duplicating adjacent pages to assure complete continuity. 2. When an image on the film is obliterated with a round black mark, it is an indication of either blurred copy because of movement during exposure, duplicate copy, or copyrighted materials that should not have been filmed.
    [Show full text]
  • Synthesis and Characterization of Seven Thiophosphate
    SYNTHESIS AND CHARACTERIZATION OF SEVEN THIOPHOSPHATE ANALOGS OF CYCLIC DIGUANOSINE MONOPHOSPHATE by JIANWEI ZHAO A Dissertation submitted to the Graduate School-New Brunswick Rutgers, The State University of New Jersey in partial fulfillment of the requirements for the degree of Doctor of Philosophy Graduate Program in Chemistry and Chemical Biology written under the direction of Professor Roger A. Jones and approved by ________________________ ________________________ ________________________ ________________________ New Brunswick, New Jersey [May, 2009] ABSTRACT OF THE DISSERTATION SYNTHESIS AND CHARACTERIZATION OF SEVEN THIOPHOSPHATE ANALOGS OF CYCLIC DIGUANOSINE MONOPHOSPHATE by JIANWEI ZHAO Dissertation Director: Professor Roger A. Jones Cyclic diguanosine monophosphate (c-di-GMP) was first identified as an activator of bacterial cellulose synthase in 1987. Since then, it has been recognized as an important second messenger molecule in many bacterial processes, including cellulose synthesis, biofilm formation, and host-pathogen interactions. More recently, it found to stimulate innate immunity in mammals. The monothiophosphate analog was synthesized some years ago and was shown to be a highly potent activator/second messenger with a high stability to enzymatic degradation. In the work presented here, synthetic methods have been developed to synthesize mono-, di- and trithiophosphate c-di-GMP analogs. All seven diastereomers of these analogs have been separated and purified. Stereochemistry of the two diastereomers of ii the monothioate analog was assigned by enzymatic digestion of the linear dimer, as well as direct enzymatic degradation of the cyclic dimers. In addition, the same linear dimer was cyclized to produce a cyclic dimer of known configuration. The correlation between stereochemistry and 31P NMR chemical shifts of the two diastereomers of the monothioate was then used to assign configurations of the di- and trithiophosphate analogs.
    [Show full text]