Asymmetric [4+1] Cycloadditions of N-Thioacylimines and Sulfur Ylides
Asymmetric [4+1] Cycloadditions of N-Thioacylimines and Sulfur Ylides
复制标题
N-硫代酰亚胺和硫叶立德的不对称[4 1]环加成
DOI:
10.1002/adsc.201700445
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发表时间:
2017-08-07
影响因子:
5.4
通讯作者:
Chen, Ying-Chun
中科院分区:
文献类型:
--
作者:
Li, Chao;Jiang, Kun;Chen, Ying-Chun
An asymmetric [4+1] cycloaddition reaction of N-thioacylimines, generated in situ from alpha-amido sulfones, and sulfur ylides bearing a D-camphor scaffold, is reported. The enantiocontrol was significantly improved by adding catalytic amounts of (R)-1,1 '-bi(2-naphthol), furnishing a spectrum of 2-alkylthio-4,5-dihydrothiazoles in modest to high yields with moderate to excellent stereoselectivity (> 19:1 dr, up to 98% ee).