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
Enzyme-Catalyzed Asymmetric Domino Thia-Michael/Aldol Condensation Using Pepsin
作者:Yang Xiang、Jian Song、Yong Zhang、Da-Cheng Yang、Zhi Guan、Yan-Hong He
DOI:10.1021/acs.joc.6b01132
日期:2016.7.15
gastric mucosa for the asymmetric catalysis of the domino thia-Michael/aldolcondensation reaction in MeCN and buffer was discovered for the first time. Broad substrate specificity was tested, and a series of corresponding products were obtained with enantioselectivities of up to 84% ee. This specific catalysis was demonstrated by using recombinant pepsin and control experiments with denatured and inhibited