Sodium Tetrafluoroborate
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2,4,6- Or 2,6-Alkoxyphenyl Dialkylphosphine, Tetrafluoroborate, Preparation Method and Use Thereof
(19) & (11) EP 2 492 274 A1 (12) EUROPEAN PATENT APPLICATION published in accordance with Art. 153(4) EPC (43) Date of publication: (51) Int Cl.: 29.08.2012 Bulletin 2012/35 C07F 9/50 (2006.01) B01J 31/24 (2006.01) C07C 43/215 (2006.01) C07C 41/30 (2006.01) (2006.01) (21) Application number: 09850497.0 C07D 307/58 (22) Date of filing: 21.12.2009 (86) International application number: PCT/CN2009/001527 (87) International publication number: WO 2011/047501 (28.04.2011 Gazette 2011/17) (84) Designated Contracting States: •LV,Bo AT BE BG CH CY CZ DE DK EE ES FI FR GB GR Zhejiang 310027 (CN) HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL • FU, Chunling PT RO SE SI SK SM TR Zhejiang 310027 (CN) (30) Priority: 22.10.2009 CN 200910154029 (74) Representative: Meyer-Dulheuer, Karl-Hermann Dr. Meyer- Dulheuer & Partner (71) Applicant: Zhejiang University Patentanwaltskanzlei Hangzhou, Zhejiang 310027 (CN) Mainzer-Landstrasse 69-71 60329 Frankfurt am Main (DE) (72) Inventors: • MA, Shengming Zhejiang 310027 (CN) (54) 2,4,6- OR 2,6-ALKOXYPHENYL DIALKYLPHOSPHINE, TETRAFLUOROBORATE, PREPARATION METHOD AND USE THEREOF (57) The current invention relates to the structure, current invention uses only one step to synthesize dialkyl synthesis of dialkyl(2,4,6- or 2,6-alkoxyphenyl)phos- (2,4,6- or 2,6-alkoxyphenyl)phosphine and its tetrafluor- phine or its tetrafluoroborate, as well as its applications oborate is stable in the air. Compared with known syn- in the palladium catalyzed carbon-chlorine bond activa- thetic routes of ligands used in activating carbon- chlorine tion for Suzuki coupling reactions and carbon-nitrogen bonds, the method of current invention is short, easy to bond formation reactions. -
The Automated Flow Synthesis of Fluorine Containing Organic Compounds
The automated flow synthesis of fluorine containing organic compounds by CHANTAL SCHOLTZ Submitted in partial fulfilment of the requirements for the degree PHILOSOPHAE DOCTOR In the Faculty of Natural & Agricultural Sciences UNIVERSITY OF PRETORIA PRETORIA Supervisor: Dr D.L. Riley February 2019 DECLARATION I, Chantal Scholtz declare that the thesis/dissertation, which I hereby submit for the degree PhD Chemistry at the University of Pretoria, is my own work and has not previously been submitted by me for a degree at this or any other tertiary institution. Signature :.......................................... Date :..................................... ii ACKNOWLEDGEMENTS I would herewith sincerely like to show my gratitude to the following individuals for their help, guidance and assistance throughout the duration of this project: My supervisor, Doctor Darren Riley, for his knowledge and commitment. Thank you for being a fantastic supervisor and allowing me the opportunity to learn so many valuable skills. My husband, Clinton, for all your love, support and patience and for always being there for me. You are the best. My family, for all the encouragement and support you gave me as well as always believing in me. I will always appreciate what you have done for me. Mr Drikus van der Westhuizen and Mr Johan Postma for their assistance at the Pelchem laboratories with product isolation and characterisation. Dr Mamoalosi Selepe for NMR spectroscopy services, Jeanette Strydom for XRF services and Gerda Ehlers at the UP library for her invaluable assistance. All my friends and colleagues for the continuous moral support, numerous helpful discussions and necessary coffee breaks. My colleagues at Chemical Process Technologies for their ongoing support and motivation, especially Dr Hannes Malan and Prof. -
Reduction of Aldehydes and Ketones to Their Corresponding Alcohols in 1- Butyl-3-Methylimidazolium Tetrafluoroborate
REDUCTION OF ALDEHYDES AND KETONES TO THEIR CORRESPONDING ALCOHOLS IN 1- BUTYL-3-METHYLIMIDAZOLIUM TETRAFLUOROBORATE Josiane Ayingeneye Dissertation submitted in fulfilment of the academic requirements for the degree of Master of Science in the School of Chemistry and Physics, University of KwaZulu-Natal, Durban. Supervisor: Prof Vincent O. Nyamori February 2018 Abstract The use and release of volatile organic solvents (VOS) to the atmosphere have become detrimental to both human health and his environment. In addition, the non-recyclability and the excessive consumption of these solvents in chemical industry influence their high costs. This has incited the growing need towards the design of new processes and benign solvents, helping in minimizing these raised issues. Ionic liquids (ILs) which are acknowledged as green and environmentally friendly solvents, are assigned as promising alternatives for replacing these VOS. The review of some ILs aspects such as structure, synthesis methods, physicochemical properties, solvent applications in reduction reactions, and their recyclability gave an impressive trend and a motivation towards our work. Synthesis of 1-butyl-3- methylimidazolium tetrafluoroborate ([BMIM][BF4]), as typical IL and investigation of its solvent efficiency, in the reduction of aldehydes and ketones to their corresponding alcohols, were the core objectives of this research. [BMIM][BF4] was synthesized via microwave (MW) and conventional methods. The characterization of the synthesized [BMIM][BF4] was done by means of Fourrier transform infrared (FTIR), nuclear magnetic resonance (1H- and 13C-NMR,) and liquid chromatograph- mass spectroscopy (LC-MS) techniques. Physicochemical properties of [BMIM][BF4] related to its solvent application, such as water content, density, viscosity and thermal stability, were explored. -
Crystal Structure of the 1M-Modification of Caesium Gallium(III) Monohy- Drogen Triphosphate, 1M-Csgahp3o10
Z. Kristallogr. NCS 218 (2003) 169–170 169 © by Oldenbourg Wissenschaftsverlag, München Crystal structure of the 1M-modification of caesium gallium(III) monohy- drogen triphosphate, 1M-CsGaHP3O10 J.-X. MiI, H. BorrmannII, Y.-X. HuangII, J.-T. Zhao*,III and R. KniepII I Xiamen University, College of Chemistry and Chemical Engineering, Xiamen 361005, P. R. China II Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, D-01187 Dresden, Germany III Shanghai Institute of Ceramics, Chinese Academy of Sciences, State Key Laboratory of High Performance Ceramics, and Superfine Microstructure, 1295 Dingxi Road, Shanghai 200050, P. R. China Received February 24, 2003, accepted and available on-line June 10, 2003; CSD-No. 409693 (2.525 g) and an excess of 37% HCl (molar ratio Ga : Cs =1:1). The mixture was heated to the boiling point. The resulting reac- tion product (CsGaCl4 [1]) was used as reactant for the next step, which was made with a mixture of CsGaCl4 (3.444 g), Cs(OH) · H2O (1.679 g) and 5 ml 85% H3PO4 (molar ratio 1:1:7). The start- ing materials were all of analytical grade. The mixture was heated (open system) to the boiling point and kept heating for three days to evaporate the solvent. Three modifications of CsGaHP3O10 crystals were obtained in the reaction product. The one with a shape of thin plate corresponds to the title compound and was used for the structure determination. Experimental details The positions of the H atom was determined from a difference Fourier map. Discussion In 1987, Chudinova et al. -
Synthesis of Organofluorine Compounds and Allenylboronic Acids - Applications Including Fluorine-18 Labelling Denise N
Denise N. Meyer Synthesis of Organofluorine Compounds and Allenylboronic Synthesis of Organofluorine Compounds and Allenylboronic Acids - Applications Including Fluorine-18 Labelling Applications Acids - Allenylboronic Synthesis of Organofluorine Compounds and Acids - Applications Including Fluorine-18 Labelling Denise N. Meyer Denise N. Meyer Raised in Lauterecken, South-West Germany, Denise studied chemistry at Johannes Gutenberg University Mainz where she obtained her Bachelor's and Master's degree. In 2017, she moved to Stockholm where she pursued her doctoral studies with Prof. Kálmán J. Szabó. ISBN 978-91-7911-490-9 Department of Organic Chemistry Doctoral Thesis in Organic Chemistry at Stockholm University, Sweden 2021 Synthesis of Organofluorine Compounds and Allenylboronic Acids - Applications Including Fluorine-18 Labelling Denise N. Meyer Academic dissertation for the Degree of Doctor of Philosophy in Organic Chemistry at Stockholm University to be publicly defended on Friday 4 June 2021 at 10.00 in Magnélisalen, Kemiska övningslaboratoriet, Svante Arrhenius väg 16 B. Abstract This work is focused on two areas: the chemistry of organofluorine and organoboron compounds. In the first chapter, a copper-catalysed synthesis of tri- and tetrasubstituted allenylboronic acids is presented. Extension of the same method leads to allenylboronic esters. The very reactive and moisture-sensitive allenylboronic acids are further applied to the reaction with aldehydes, ketones and imines to form homopropargyl alcohols and amines. In addition, an enantioselective reaction catalysed by a BINOL organocatalyst was developed to form tertiary alcohols with adjacent quaternary carbon stereocenters. The second chapter specialises in the functionalisation of 2,2-difluoro enol silyl ethers with electrophilic reagents under mild reaction conditions. -
Durham E-Theses
Durham E-Theses Selective Fluorination Strategies BREEN, JESSICA,RUTH How to cite: BREEN, JESSICA,RUTH (2012) Selective Fluorination Strategies, Durham theses, Durham University. Available at Durham E-Theses Online: http://etheses.dur.ac.uk/3479/ Use policy The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that: • a full bibliographic reference is made to the original source • a link is made to the metadata record in Durham E-Theses • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders. Please consult the full Durham E-Theses policy for further details. Academic Support Oce, Durham University, University Oce, Old Elvet, Durham DH1 3HP e-mail: [email protected] Tel: +44 0191 334 6107 http://etheses.dur.ac.uk Abstract There is a great interest in the synthesis of fluorinated aromatic and heterocyclic compounds, which have a range of applications in the pharmaceutical industry. Many common routes to these compounds, however, are low yielding and or/expensive. This thesis is concerned with novel methods for the synthesis of fluoro-aromatics and fluoro- pyrazoles using conventional fluorinating agents, such as Selectfluor™, as well as using elemental fluorine and the flow reactor technology developed in Durham. Firstly, elemental fluorine was used to fluorinate a range of aromatics containing electron-donating substituents, using both batch and flow methods. -
Toxicological Profile for Lead
LEAD 355 CHAPTER 5. POTENTIAL FOR HUMAN EXPOSURE 5.1 OVERVIEW Pb and Pb compounds have been identified in at least 1,287 and 46 sites, respectively, of the 1,867 hazardous waste sites that have been proposed for inclusion on the EPA National Priorities List (NPL) (ATSDR 2019). However, the number of sites evaluated for Pb is not known. The number of sites in each state is shown in Figures 5-1 and 5-2, respectively. Of these 1,287 sites for Pb, 1,273 are located within the United States, 2 are located in the Virgin Islands, 2 are located in Guam, and 10 are located in Puerto Rico (not shown). All the sites for Pb compounds are only in the United States. Figure 5-1. Number of NPL Sites with Lead Contamination LEAD 356 5. POTENTIAL FOR HUMAN EXPOSURE Figure 5-2. Number of NPL Sites with Lead Compound Contamination • Pb is an element found in concentrated and easily accessible Pb ore deposits that are widely distributed throughout the world. • The general population may be exposed to Pb in ambient air, foods, drinking water, soil, and dust. For adults, exposure to levels of Pb beyond background are usually associated with occupational exposures. • For children, exposure to high levels of Pb are associated with living in areas contaminated by Pb (e.g., soil or indoor dust in older homes with Pb paint). Exposure usually occurs by hand-to- mouth activities. • As an element, Pb does not degrade. However, particulate matter contaminated with Pb can move through air, water, and soil. -
Tin Tetrafluoroborate Solution 50 % B2f8sn
PRODUCT STEWARDSHIP SUMMARY Tin tetrafluoroborate solution 50 % B2F8Sn Chemical Name: Tin(II) tetrafluoroborate Tin bis(tetrafluoroborate), tin(2+) tetrafluoroboranuide, Borate(1-), Synonyms: tetrafluoro-, tin(2+) (2:1), Borate(1-), tetrafluoro-, tin(2++) (2:1) CAS Number: 13814-97-6 CAS Name: Tin bis(tetrafluoroborate) EC (EINECS) Number: 237-487-6 Last Revision Date: February 2019 • Tin(II) tetrafluoroborate solution 50% is used in electrolytic tin plating. • This mixture is predominantly composed of tin(II) tetrafluoroborate and water, with tetrafluoroboric acid composing approximately 3%. • The primary exposure to this product occurs in the industrial setting. For workers, good manufacturing and industrial hygiene practices should be followed to prevent or reduce exposure. Workplace exposure limits for tin(II) tetrafluoroborate solution 50% have been established for use in worksite safety programs. See the Safety Data Sheet (SDS) for additional information. • Tin(II) tetrafluoroborate solution 50% is a colorless, odorless liquid, completely soluble in water and stable under normal conditions although very corrosive to metals. In contact with fire, tin tetrafluoroborate solution 50% decomposes to release hazardous hydrogen fluoride, as well as boron and tin oxide fumes. • This product is harmful if swallowed and may cause severe nasal and upper respiratory tract irritation as well as serious eye irritation. Tin(II) tetrafluoroborate solution 50% may cause allergic skin reactions. The health effects of the release of free fluoride ion from fluoroborates that make up this mixture is similar to that of hydrofluoric acid. Ingestion and significant inhalation exposure can cause severe systemic effects including hypocalcemia, hypomagnesemia and hyperkalemia resulting in electrolyte imbalance and cardiac arrhythmias. -
Download Date 07/10/2021 01:33:42
Functional ionic liquids in crystal engineering and drug delivery Item Type Thesis Authors Bansode, Ratnadeep V. Rights <a rel="license" href="http://creativecommons.org/licenses/ by-nc-nd/3.0/"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by- nc-nd/3.0/88x31.png" /></a><br />The University of Bradford theses are licenced under a <a rel="license" href="http:// creativecommons.org/licenses/by-nc-nd/3.0/">Creative Commons Licence</a>. Download date 07/10/2021 01:33:42 Link to Item http://hdl.handle.net/10454/14563 University of Bradford eThesis This thesis is hosted in Bradford Scholars – The University of Bradford Open Access repository. Visit the repository for full metadata or to contact the repository team © University of Bradford. This work is licenced for reuse under a Creative Commons Licence. FUNCTIONAL IONIC LIQUIDS FOR USE IN CRYSTAL ENGINEERING AND DRUG DELIVERY Ratnadeep Vitthal BANSODE Submitted for the Degree of Doctor of Philosophy School of Life Sciences University of Bradford 2016 Abstract Ratnadeep Vitthal Bansode Functional ionic liquids in crystal engineering and drug delivery Key words: Phosphonium ionic liquids, imidazolium ionic liquids, synthesis, pharmaceutical drugs, crystallisation, solubility, pharmaceuticals, API-ILs synthesis and drug release. The objective of this research is to explore the use of ionic liquds in crystal engineering and drug delivery. Ionic liquids have a wide range of applications in pharmaceutical field due to their unique physicochemical propertie ssuch as chemical, thermal stability, low melting point, nonvolatility, nonflamability, low toxicity and recyclability which offer unique and interesting potential for pharmaceuitcal applications. -
Controlling and Exploiting the Caesium Effect in Palladium Catalysed Coupling Reactions
Controlling and exploiting the caesium effect in palladium catalysed coupling reactions Thomas J. Dent Submitted in accordance with the requirements for the degree of Doctor of Philosophy The University of Leeds School of Chemistry May 2019 i The candidate confirms that the work submitted is his own and that appropriate credit has been given where reference has been made to the work of others. This copy has been supplied on the understanding that it is copyright material and that no quotation from the report may be published without proper acknowledgement The right of Thomas Dent to be identified as Author of this work has been asserted by him in accordance with the Copyright, Designs and Patents Act 1988. © 2019 The University of Leeds and Thomas J. Dent ii Acknowledgements This project could not have been completed without the help of several individuals who’ve helped guide the project into the finished article. First and foremost I’d like to thank Dr. Bao Nguyen his support, useful discussions and the ability to sift through hundreds of experiments of kinetic data to put together a coherent figure. My writing has come a long way from my transfer report, so all the comments and suggestions seem to have mostly not been in vain. To Paddy, the discussions relating to the NMR studies and anything vaguely inorganic were incredibly useful, and provided me with data that supported our hypothesis with more direct evidence than just the reaction monitoring experiments. Rob, I really enjoyed my time at AZ and your support during my time there was incredibly useful so I could maximise my short secondment when I was getting more results than I knew what to do with. -
Lead Fluoroborate Product Stewardship Summary February 2012
Lead Fluoroborate Product Stewardship Summary February 2012 Pb(BF4)2 Chemical Name: Lead fluoroborate Chemical Category (if applicable): Inorganic lead compound Synonyms: Lead fluoborate; Lead borofluoride; Lead bis(tetrafluoroborate); Lead(II) tetrafluoroborate; Lead(2+) tetrafluoroborate(1-); Borate(1-), tetrafluoro-, lead (2+); Borate(1-), tetrafluoro-, lead (2+) (2:1); Lead tetrafluoroborate; Lead boron fluoride; and Lead fluoroborate solution CAS Number: 13814-96-5 CAS Name: Lead fluoroborate EC (EINECS) Number: 237-486-0 Other identifier (Please specify): GPS0057 Lead fluoroborate is used as a catalyst in production of linear polyesters, a curing agent for epoxy resins; in electroplating solutions for coating metals with lead, in manufacturing flame- retardants, for electrolytic generation of boron, and in preparations for glazing frits. Exposure can occur at either a lead fluoroborate production facility or at other manufacturing, packaging or storage facilities that handle lead fluoroborate. Persons involved in maintenance, sampling and testing activities, or in the loading and unloading of lead fluoroborate packages are at risk of exposure. The 50% solution when used in electroplating operations may generate airborne mists, but worker exposure can be controlled with the use of proper general mechanical ventilation and personal protective equipment. Good manufacturing practices and industrial hygiene practices are also implemented to prevent or reduce exposure to lead fluoroborate. Workplace exposure limits for both lead and fluoride have been established for use in worksite safety programs. The general public or consumers will not be exposed to lead fluoroborate. Please see the MSDS for additional information. Lead fluoroborate is in the form of either a crystalline powder however the Honeywell product is a 50% solution a clear, colorless liquid that is stable under normal conditions of use and storage. -
Synthesis of New Chiral Diaryliodonium Salts
SYNLETT0936-52141437-2096 © Georg Thieme Verlag Stuttgart · New York 2015, 26, 1573–1577 1573 letter Syn lett M. Brown et al. Letter Synthesis of New Chiral Diaryliodonium Salts Michael Browna Marion Delormea Florence Malmedya Joel Malmgrenb Berit Olofssonb Thomas Wirth*a a School of Chemistry, Cardiff University, Park Place, Main Building, Cardiff CF10 3AT, UK [email protected] b Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 106 91 Stockholm, Sweden Dedicated to Prof. Dr. Peter Vollhardt Received: 06.03.2015 reactions with carbon nucleophiles including β-keto esters.9 Accepted after revision: 09.04.2015 Conditions have been established to predict which arene is Published online: 20.05.2015 DOI: 10.1055/s-0034-1380687; Art ID: st-20156-b0156-l transferred when unsymmetrical salts are employed and this has allowed the design of unsymmetrical salts as selec- tive arene-transfer reagents. Transfer of the most electron- Abstract A structurally diverse range of chiral diaryliodonium salts poor arene or those with ortho substituents can usually be have been synthesised which have potential application in metal-free predicted under metal-free conditions, thus allowing elabo- stereoselective arylation reactions. ration in the design of a non-transferable aryl ligand which often can be recycled as the iodoarene.10 Key words arylation, diaryliodonium salts, hypervalent iodine, stereo- selective synthesis Chiral diaryliodonium salts, where one substituent con- tains a stereogenic unit, have received very limited atten- tion since the first derivative of that type, diphenyliodoni- Hypervalent iodine compounds have gained popularity um tartrate, was reported in 1907.11 Ochiai described the in recent years as extremely versatile and environmentally synthesis of 1,1′-binaphth-2-yl(phenyl)iodonium salts 1 benign reagents.