States Patent 0 " 1C@ Patented Feb
Total Page:16
File Type:pdf, Size:1020Kb

Load more
Recommended publications
-
Review in Heterocyclic Compounds 51
Journal of Plastic and Polymer Technology (JPPT) Vol. 1, Issue 1, Jun 2015, 49-64 © TJPRC Pvt. Ltd. REVIEW PAPER IN HETEROCYCLIC COMPOUNDS NAGHAM MAHMOOD ALJAMALI Organic Chemistry, Chemistry Department, College of Education ABSTRACT In this review paper, information about heterocyclic compounds, methods of synthesis, reactions , properties , stability, saturated and unsaturated cycles , aliphatic and aromatic cycles have been thoroughly reviewed and discussed. KEYWORDS : Heterocyclic, Three Membered, Seven, Cyclization, Sulfur,Nitrogen INTRODUCTION Three Membered Rings Heterocycles with three atoms in the ring are more reactive because of ring strain. Those containing one heteroatom are, in general, stable. Those with two heteroatoms are more likely to occur as reactive intermediates. Table 1: Common 3-Membered Heterocycles with One Heteroatom Are Heteroatom Saturated Unsaturated Nitrogen Aziridine Azirine Oxygen Oxirane (ethylene oxide, epoxides) Oxirene Sulfur Thiirane (episulfides) Thiirene Tabli 2: Those with Two Heteroatoms Include Heteroatom Saturated Unsaturated Nitrogen Diazirine Nitrogen/oxygen Oxaziridine Oxygen Dioxirane MEMBERED RINGS Table 3: Compounds with One Heteroatom Heteroatom Saturated Unsaturated Nitrogen Azetidine Azete Oxygen Oxetane Oxete Sulfur Thietane Thiete Table 4: Compounds with Two Heteroatoms Heteroatom Saturated Unsaturated Nitrogen Diazetidine Oxygen Dioxetane Dioxete Sulfur Dithietane Dithiete www.tjprc.org [email protected] 50 Nagham Mahmood Aljamali MEMBERED RINGS With heterocycles containing five -
Group Heterocycles for Semiconducting Polymers
Main Group Heterocycles for Semiconducting Polymers Dissertation zur Erlangung des Doktorgrades der Mathematisch-Naturwissenschaftlichen Fakultät der Christian-Albrechts-Universität zu Kiel vorgelegt von Julian Linshöft Kiel 2014 1. Gutachterin: Prof. Dr. Anne Staubitz 2. Gutachter: Prof. Dr. Ulrich Lüning Tag der mündlichen Prüfung: 24. November 2014 Zum Druck genehmigt: 24. November 2014 gez. Prof. Dr. Wolfgang J. Duschl, Dekan Die vorliegende Arbeit wurde unter Anleitung von Prof. Dr. Anne Staubitz am Otto-Diels-Institut für Organische Chemie der Christian-Albrechts-Universität zu Kiel in der Zeit von Mai 2011 bis Oktober 2014 angefertigt. Hiermit erkläre ich, Julian Linshöft, an Eides statt, dass ich die vorliegende Dissertation selbstständig und nur mit den angegebenen Hilfsmitteln angefertigt habe. Inhalt und Form dieser Arbeit sind, abgesehen von der Beratung durch meine Betreuerin Prof. Dr. Anne Staubitz, durch mich eigenständig erarbeitet und verfasst worden. Die Arbeit entstand unter Einhaltung der Regeln guter wissenschaftlicher Praxis der Deutschen Forschungsgemeinschaft. Weder die gesamte Arbeit noch Teile davon habe ich an anderer Stelle im Rahmen eines Prüfungsverfahrens eingereicht. Dies ist mein erster Promotionsversuch. Kiel, den 2. Oktober 2014 ________________________________ (Julian Linshöft) Danksagung An dieser Stelle möchte ich mich bei all denen bedanken, die dazu beigetragen haben, dass ich diese Arbeit fertigstellen konnte. Dazu gehört an erster Stelle die Unterstützung, die in direktem Zusammenhang zu dieser Arbeit steht: Vielen Dank an Prof. Dr. Anne Staubitz! Danke für das spannende und fordernde Thema sowie die ausgezeichnete und immer sehr engagierte Betreuung und Beratung. Vielen Dank für das Vertrauen in mich und all die gewährten Freiheiten. Ein großes Dankeschön geht auch an die Deutsche Bundesstiftung Umwelt (DBU), die meine Promotion über 3 Jahre finanziert hat. -
On the Syntheses and Reactions of Boroles and Boraindenes
University of Calgary PRISM: University of Calgary's Digital Repository Graduate Studies The Vault: Electronic Theses and Dissertations 2014-10-08 On the Syntheses and Reactions of Boroles and Boraindenes Houghton, Adrian Yuri Houghton, A. Y. (2014). On the Syntheses and Reactions of Boroles and Boraindenes (Unpublished doctoral thesis). University of Calgary, Calgary, AB. doi:10.11575/PRISM/27197 http://hdl.handle.net/11023/1925 doctoral thesis University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. Downloaded from PRISM: https://prism.ucalgary.ca UNIVERSITY OF CALGARY On the Syntheses and Reactions of Boroles and Boraindenes by Adrian Yuri Houghton A THESIS SUBMITTED TO THE FACULTY OF GRADUATE STUDIES IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY Department of Chemistry CALGARY, ALBERTA September, 2014 © ADRIAN YURI HOUGHTON 2014 Abstract Highly Lewis-acidic boranes are an important class of compounds in both fundamental and applied chemistry. Recently, a sub-class of boranes known as boroles – five-membered unsaturated boracycles – has begun to receive attention due to the interesting properties afforded by the anti-aromatic nature of these compounds. We synthesized and characterized a new class of boroles wherein the borole ring is fused to a benzene ring. These “boraindenes” were found to be highly Lewis acidic by the Gutmann- Beckett method, even more so than the ubiquitous tris-pentafluorophenylborane. -
Coupling Reactions
Routes to organogold compounds and gold catalysed A3-coupling reactions A thesis submitted to the University of Manchester for the degree of Doctor of Philosophy in the Faculty of Engineering and Physical Sciences. 2013 Gregory Arthur Price School of Chemistry Contents Abbreviations ...................................................................................................................................... 7 Abstract ............................................................................................................................................. 11 Declaration ........................................................................................................................................ 12 Copyright .......................................................................................................................................... 13 Acknowledgments ............................................................................................................................. 14 1 The Chemistry of Gold ............................................................................................................. 15 1.1 Introduction ....................................................................................................................... 15 1.2 Oxidation states of gold .................................................................................................... 16 1.2.1 Gold(I) complexes..................................................................................................... 16 -
Conjugated Heteroles Containing Group 13 Elements Sossina Gezahegn Ryerson University
Ryerson University Digital Commons @ Ryerson Theses and dissertations 1-1-2012 π-Conjugated Heteroles Containing Group 13 Elements Sossina Gezahegn Ryerson University Follow this and additional works at: http://digitalcommons.ryerson.ca/dissertations Part of the Analytical Chemistry Commons, Inorganic Chemistry Commons, and the Polymer Chemistry Commons Recommended Citation Gezahegn, Sossina, "π-Conjugated Heteroles Containing Group 13 Elements" (2012). Theses and dissertations. Paper 717. This Thesis is brought to you for free and open access by Digital Commons @ Ryerson. It has been accepted for inclusion in Theses and dissertations by an authorized administrator of Digital Commons @ Ryerson. For more information, please contact [email protected]. π-CONJUGATED HETEROLES CONTAINING GROUP 13 ELEMENTS by Sossina Gezahegn BSc, Applied Chemistry and Biology, Ryerson University, 2008 A thesis presented to Ryerson University in partial fulfillment of the requirements for the degree of Master of Science in the program of Molecular Science Toronto, Ontario, Canada, 2012 © (Sossina Gezahegn) 2012 Author’s Declaration I hereby declare that I am the sole author of this thesis. I authorize Ryerson University to lend this thesis to other institutions or individuals for the purpose of scholarly research. Name: Signature: ____________________________ I further authorize Ryerson University to reproduce this thesis by photocopying or by other means, in total or in part, at the request of other institutions or individuals for the purpose of scholarly research. Name: Signature: ____________________________ ii π-CONJUGATED HETEROLES CONTAINING GROUP 13 ELEMENTS Sossina Gezahegn Master of Science, Molecular Science, Ryerson University 2012 Abstract: This research targeted the synthesis of group 13 neutral heteroles via transmetallation of the tin atom in stannole moieties. -
Heterocyclic Compound
Heterocyclic compound . Pyridine, a heterocyclic compound cyclo-octasulfur, a homocyclic compound A heterocyclic compound or ring structure is a cyclic compound that has atoms of at least two different elements as members of its ring(s).[1] Heterocyclic chemistry is the branch of chemistry dealing with the synthesis, properties and applications of these heterocycles. In contrast, the rings of homocyclic compounds consist entirely of atoms of the same element. Although heterocyclic compounds may be inorganic, most contain at least one carbon. While atoms that are neither carbon nor hydrogen are normally referred to in organic chemistry as heteroatoms, this is usually in comparison to the all-carbon backbone. But this does not prevent a compound such as borazine (which has no carbon atoms) from being labelled "heterocyclic". IUPAC recommends the Hantzsch-Widman nomenclature for naming heterocyclic compounds. Classification based on electronic structure Heterocyclic compounds can be usefully classified based on their electronic structure. The saturated heterocycles behave like the acyclic derivatives. Thus, piperidine and tetrahydrofuran are conventional amines and ethers, with modified steric profiles. Therefore, the study of heterocyclic chemistry focuses especially on unsaturated derivatives, and the preponderance of work and applications involves unstrained 5- and 6-membered rings. Included are pyridine, thiophene, pyrrole, and furan. Another large class of heterocycles are fused to benzene rings, which for pyridine, thiophene, pyrrole, and furan arequinoline, benzothiophene, indole, and benzofuran, respectively. Fusion of two benzene rings gives rise to a third large family of compounds, respectively the acridine, dibenzothiophene, carbazole, anddibenzofuran. The unsaturated rings can be classified according to the participation of the heteroatom in the pi system. -
Synthetic Routes to Heterocycloheptatrienes Albin James Nelson Iowa State University
Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations 1972 Synthetic routes to heterocycloheptatrienes Albin James Nelson Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/rtd Part of the Organic Chemistry Commons Recommended Citation Nelson, Albin James, "Synthetic routes to heterocycloheptatrienes " (1972). Retrospective Theses and Dissertations. 5945. https://lib.dr.iastate.edu/rtd/5945 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 dissertation was produced from a microfilm copy of the original document. While the most advanced technological means to photograph and reproduce this document have been used, the quality is heavily dependent upon the quality of the original submitted. The following explanation of techniques is provided to help you understand markings or patterns 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 thru an image and duplicating adjacent pages to insure you complete continuity. 2. When an image on the film is obliterated with a large round black mark, it is an indication that the photographer suspected that the copy may have moved during exposure and thus cause a blurred image.