The stereospecific trifluoromethylation of α-iodo-α,β-unsaturated esters: a novel synthesis of (Z)-α-trifluoromethyl-α,β-unsaturated esters
摘要:
This paper describes simple and successful methods for the preparation of alpha -iodo-alpha,beta -unsaturated esters. The trifluoromethylation of (Z)alpha -iodo-alpha,beta -unsaturated esters stereo-selectively provides (Z)-alpha -trifluoromethyl-alpha,beta -unsaturated esters. (C) 2001 Elsevier Science B.V. All rights reserved.
A Facile One‐Pot Synthesis of α‐Iodo‐α,β‐unsaturated Esters
作者:Xingguo Zhang、Ping Zhong、Fan Chen
DOI:10.1081/scc-120030760
日期:2004.12.31
Aldehydes reacted with (ethoxycarbonyliodomethyl)triphenylphosphonium iodide, tetrabutylammonium bromide, and potassium carbonate in methanol at 40degreesC to give alpha-iodo-alpha,beta-unsaturated esters in good to excellent yield.
The stereospecific trifluoromethylation of α-iodo-α,β-unsaturated esters: a novel synthesis of (Z)-α-trifluoromethyl-α,β-unsaturated esters
作者:Xingguo Zhang、Feng-Ling Qing、Yiyuan Peng
DOI:10.1016/s0022-1139(00)00400-0
日期:2001.3
This paper describes simple and successful methods for the preparation of alpha -iodo-alpha,beta -unsaturated esters. The trifluoromethylation of (Z)alpha -iodo-alpha,beta -unsaturated esters stereo-selectively provides (Z)-alpha -trifluoromethyl-alpha,beta -unsaturated esters. (C) 2001 Elsevier Science B.V. All rights reserved.
One-Pot Approach to the Conversion of Alcohols into <font>α</font>-Iodo-<font>α</font>,<font>β</font>-unsaturated Esters
作者:Usama Karama
DOI:10.1080/00397910903434570
日期:2010.11.3
(Carboethoxymethylene)triphenylphosphorane 1 can undergo the tandem reaction of iodination-oxidation-Wittig reaction with alcohol in the presence of N-iodosuccinimide (NIS) and manganese dioxide. The reaction constitutes a stereoselective one-pot procedure for the preparation of Z-configured -iodo-,-unsaturated esters in good to excellent yield.