Thermal Decomposition of Pentacarbonyl(1-acyloxyalkylidene)chromium(0) Complexes: Formation of Z-Enol Esters
摘要:
Pentacarbonyl(1-acyloxyalkylidene)chromium(0) complexes, formed in situ by reaction of the corresponding tetramethylammonium pentacarbonyl(1-oxoalkyl)chromate(1-) salts with carboxylic acid halides, affords enol esters in moderate to good yields. In all cases examined, the Z-enol ester was obtained as the major or exclusive isomer. Addition of I equiv of pyridine to the reaction mixture substantially improved the Z/E ratio and, in most cases, increased the chemical yield.
Odic, Y.; Pereyre, M., Comptes Rendus des Seances de l'Academie des Sciences, Serie C: Sciences Chimiques, 1970, vol. 270, p. 100 - 103
作者:Odic, Y.、Pereyre, M.
DOI:——
日期:——
Alkylations en α de fonctions organiques par l'intermédiaire de compostés organostanniques
作者:Yvon Odic、Michel Pereyre
DOI:10.1016/s0022-328x(00)82070-7
日期:1973.7
Thermal Decomposition of Pentacarbonyl(1-acyloxyalkylidene)chromium(0) Complexes: Formation of <i>Z</i>-Enol Esters
作者:Björn C. Söderberg、Jian Liu、Thomas W. Ball、Michael J. Turbeville
DOI:10.1021/jo962197c
日期:1997.8.1
Pentacarbonyl(1-acyloxyalkylidene)chromium(0) complexes, formed in situ by reaction of the corresponding tetramethylammonium pentacarbonyl(1-oxoalkyl)chromate(1-) salts with carboxylic acid halides, affords enol esters in moderate to good yields. In all cases examined, the Z-enol ester was obtained as the major or exclusive isomer. Addition of I equiv of pyridine to the reaction mixture substantially improved the Z/E ratio and, in most cases, increased the chemical yield.