Synthesis of α-alkenyl-β-hydroxy adducts by α-addition of unprotected 4-bromocrotonic acid and amides with aldehydes and ketones by chromium(II)-mediated reactions
作者:Ludger A. Wessjohann、Harry Wild、Leonildo A. Ferreira、Henri S. Schrekker
DOI:10.1002/aoc.3488
日期:2016.8
The regioselective and diastereoselective chromium(II)‐mediated reactions of 4‐bromocrotonic acid or amides with aldehydes and ketones can proceed without the need to protect protic sites to generate the respective α‐alkenyl‐β‐hydroxy adducts, i.e. formally the addition of the α‐anion of a carboxylic acid or amide to an oxo‐compound is featured. Copyright © 2016 John Wiley & Sons, Ltd.
可以进行4-溴巴豆酸或酰胺与醛和酮的区域选择性和非对映选择性铬(II)介导的反应,而无需保护质子位点以生成相应的α-烯基-β-羟基加合物,即正式添加具有羧酸或酰胺的α-阴离子与羰基化合物的特征。版权所有©2016 John Wiley&Sons,Ltd.