Epoxidation of chiral camphor N-enoylpyrazolidinones with methyl(trifluoromethyl)dioxirane and urea hydrogen peroxide/acid anhydride:: Reversal of stereoselectivity

被引:26
作者
Fan, CL [1 ]
Lee, WD [1 ]
Teng, NW [1 ]
Sun, YC [1 ]
Chen, KM [1 ]
机构
[1] Natl Taiwan Normal Univ, Dept Chem, Taipei 116, Taiwan
关键词
D O I
10.1021/jo034807w
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Both diastereomeric isomers of epoxides with high optical purity are obtained when camphor N-methacryl-oylpyrazolidinone (1a) and N-tigloylpyrazolidinone (1b) are treated with a urea hydrogen peroxide/TFAA and methyl(trifluoromethyl)dioxirane, respectively.
引用
收藏
页码:9816 / 9818
页数:3
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