TiCl4 and LiClO4 promoted additions of O-silylketene acetals to chiral beta-formyl esters

被引：2

作者：

Angert, H ^{[1
]}

Czerwonka, R ^{[1
]}

Reissig, HU ^{[1
]}

机构：

[1] TECH UNIV DRESDEN,INST ORGAN CHEM,D-01062 DRESDEN,GERMANY

来源：

JOURNAL FUR PRAKTISCHE CHEMIE-CHEMIKER-ZEITUNG | 1997年 / 339卷 / 05期

关键词：

D O I：

10.1002/prac.19973390179

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Lewis acid promoted additions of O-silylketene acetals 1a and 1b to beta-formyl ester 2 furnished gamma-lactones 3a and 3b. Employing TiCl4 as promotor chelate control leads to moderate or excellent trans selectivity, whereas LiClO4 as Lewis acid did not induce appreciable diastereoselectivity.

引用

页码：453 / 455

页数：3

共 24 条

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