An Organocatalytic Domino Thia-Michael/Aldol Condensation Reaction: Highly Enantioselective Synthesis of Functionalized Dihydrothiophenes
作者:Jie Tang、Dan Qian Xu、Ai Bao Xia、Yi Feng Wang、Jun Rong Jiang、Shu Ping Luo、Zhen Yuan Xu
DOI:10.1002/adsc.201000245
日期:2010.9.10
An organocatalytic domino thia‐Michael/aldol condensation reaction of α, β‐unsaturated aldehydes with 1, 4‐dithiane‐2,5‐diol catalyzed by chiral diphenylprolinol TMS ether has been developed, which provides a new practical and direct route to chiral dihydrothiophenes with high yields (up to 90%) and excellent enantioselectivities (up to>99% ee). The catalytic mechanism of the domino reaction was further
已开发出手性二苯基脯氨醇TMS醚催化的α,β-不饱和醛与1,4,-二噻吩-2-3,5-二醇的有机催化多米诺亚硫杂Michael / aldol缩合反应,为手性二氢噻吩的开发提供了一条新的实用且直接的途径具有高产率(高达90%)和出色的对映选择性(高达> 99%ee)。通过APCI-MS检测拟议的反应中间体进一步证实了多米诺反应的催化机理。