A new method for the preparation of 3,5-disubstituted butenolides
作者:Stephen L. Buchwald、Qun Fang、Susan M. King
DOI:10.1016/0040-4039(88)85185-2
日期:1988.1
A convenient method for the transformation of suitably protected propargyl alcohols into 3,5disubstiuted butenolides has been developed. This organozirconium-based method transforms optically active propargyl alcohols into the corresponding butenolides with no loss of optical activity.
Synthesis of 3,5-Disubstituted Butenolides. A Short Preparation of<i>Volatile Streptomyces Lactones</i>
作者:T. Howard Black、Gary A. Brown、Douglas C. Smith、Sean M. Martinie
DOI:10.1080/00397919508011381
日期:1995.2
Abstract α-Chloro carboxylic acid dianions condense with propanal to form β-lactones which, upon treatment with magnesium bromide, form 3,5-disubstitutedbutenolides.
CuCl-Catalyzed cycloisomerization reaction of 1,2-allenyl carboxylic acids. A cost-effective synthesis of β-unsubstituted butenolides
作者:Shengming Ma、Zhanqian Yu、Shulin Wu
DOI:10.1016/s0040-4020(00)01149-2
日期:2001.2
Fourteen examples of 2,3-butadienoic acids were synthesized according to the known procedures and their high-yielding CuCl-catalyzed cycloisomerization reaction to afford butenolides were described. (C) 2001 Elsevier Science Ltd. All rights reserved.
BUCHWALD, STEPHEN L.;FANG, QUN;KING, SUSAN M., TETRAHEDRON LETT., 29,(1988) N 28, C. 3445-3448