An efficient method for the synthesis of enantiopure cis-α,β-epoxy acids
摘要:
Enantiopure cis-alpha,beta-epoxy acids were prepared via a modified Darzen's reaction employing the titanium-mediated bromination-aldolization of chiral acetate thioimide enolate. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
An efficient method for the synthesis of enantiopure cis-α,β-epoxy acids
摘要:
Enantiopure cis-alpha,beta-epoxy acids were prepared via a modified Darzen's reaction employing the titanium-mediated bromination-aldolization of chiral acetate thioimide enolate. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
Asymmetric bromination-aldolization of chiral acetate titanium enolate derived from thioimide. A general approach to the synthesis of enantiopure α-bromo-β-hydroxy carboxylic acids
作者:Ying-Chuan Wang、Dah-Wei Su、Chen-Men Lin、Hsi-Liang Tseng、Chi-Lung Li、Tu-Hsin Yan
DOI:10.1016/s0040-4039(99)00576-6
日期:1999.4
Chiral acetate titanium enolate derived from thioimide efficiently effects one-step bromination-aldolization with excellent yields and exceptionally high levels of asymmetric induction in aldol additions. General base promoted oxazolidinethione deacylation provides direct access to chiral α-bromo-β-hydroxy acids.