Direct Regioselective [3 + 2]-Cyclization Reactions of Ambivalent Electrophilic/Nucleophilic β-Chlorovinyl Dithianes: Access to Cyclopentene Derivatives
作者:Yongping Liang、Junshan Lai、Teng Liu、Shouchu Tang
DOI:10.1021/acs.orglett.6b02536
日期:2016.10.7
The highly regioselective and operationally straightforward [3 + 2] cyclizations of β-chlorovinyl dithianes with α,β-unsaturated carbonyl compounds have been developed. This protocol provides direct access to highly functionalized cyclopentenes with perfect chemo- and regioselectivities under extremely mild reaction conditions. In particular, the unprecedented cyclization allows for the selective preparation
已经开发了具有α,β-不饱和羰基化合物的β-氯乙烯基二噻吩的高度区域选择性和操作简便的[3 + 2]环化反应。该方案可在极其温和的反应条件下直接获得具有完美的化学和区域选择性的高度官能化的环戊烯。特别地,空前的环化允许选择性地制备羟基化的环戊烯。