Sequential combination of Michael and acetalization reactions: direct catalytic asymmetric synthesis of functionalized 4-nitromethyl-chromans as drug intermediates
作者:Dhevalapally B. Ramachary、Rajasekar Sakthidevi
DOI:10.1039/c0ob00189a
日期:——
Functionalized chiral 4-nitromethyl-chromans as drug intermediates were achieved for the first time through sequential combination of Michael and acetalization reactions on 2-(2-nitro-vinyl)-phenols with acetone and alcohols in the presence of a catalytic amount of 9-amino-9-deoxyepiquinine and Ph2CHCO2H followed by p-TSA.
通过在2-(2-硝基-乙烯基)-苯酚上进行迈克尔和缩醛化反应的顺序结合,首次获得了功能化的手性4-硝基甲基-色团作为药物中间体 丙酮 和酒精在催化量的 9-氨基-9-脱氧表醌和Ph 2 CHCO 2 H,然后对-TSA。