Stereocontrolled synthesis of linear 22R-homoallylic sterols via a triflic acid-catalyzed 2-oxonia cope rearrangement

被引：29

作者：

Loh, TP ^{[1
]}

Hu, QY ^{[1
]}

Ma, LT ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Chem, Singapore 117543, Singapore

来源：

ORGANIC LETTERS | 2002年 / 4卷 / 14期

关键词：

D O I：

10.1021/ol026136e

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

[GRAPHICS] Poor stereoselectivity caused by the involvement of side reaction pathways was observed in the ln(OTf)(3)-catalyzed allyl-transfer reaction (R = electron-withdrawing group). Subsequently, it was found that the employment of triflic acid (TFA) as catalyst could successfully suppress the side reaction pathways and, hence, achieve high stereoselectivity.

引用

页码：2389 / 2391

页数：3

共 23 条

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