摘要:

AbstractThe use of pyridinium poly‐hydrogen fluoride for the convenient production of fluorohydrins is described. Pyridinium poly‐hydrogen fluoride as the hydrofiuorinating agent for epoxides allows the reaction to be carried out under mild conditions without heating the reaction mixture. The method is applicable to both aliphatic and aromatic epoxi

ISSN:0021-2148    

DOI:10.1002/ijch.197800022

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractReaction of chlorotrifluoroethylene with caesium fluoride in tetraglyme gives CF3CFCl2and higher molecular weight compounds which do not contain chlorine, C8F16, C10F18, C12F22, etc. The mechanism of this process, including the production of additional unsaturated sites, is discussed. Chlorotrifluoroethylene also reacts with perfluorobut‐2‐ene, giving mainly C6F12, C8F16and C10F18, and with C8F16, giving mainly C10F18, C12F22and C14F24. It is now established that reaction of perfluorobut‐2‐ene with caesium fluoride gives C8F16and C12F22and it is proposed that this fluoride‐ion induced defluorination is promoted by the formation of caesium poly

ISSN:0021-2148    

DOI:10.1002/ijch.197800023

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractHückel integral parameters were evaluated for F and Cl by fitting calculated to observed heats of atomization. With these, empirical C‐F and C‐Cl bond energy terms were obtained from Hückel calculations on a set of 34 halogen‐substituted acyclics. The effect of fluorine substitution on the resonance energy per π electron (REPE) of cyclic compounds was then examined. Both F and Cl were found to act as electron donors in affecting REPE with F being the

ISSN:0021-2148    

DOI:10.1002/ijch.197800024

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

ISSN:0021-2148    

DOI:10.1002/ijch.197800001

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY