Hindered Bronsted bases as Lewis base catalysts

被引：18

作者：

Tabassum, Sobia ^{[1
]}

Sereda, Oksana ^{[1
]}

Reddy, Peddiahgari Vasu Govardhana ^{[1
]}

Wilhelm, Rene ^{[1
]}

机构：

[1] Clausthal Univ Technol, Inst Organ Chem, D-38678 Clausthal Zellerfeld, Germany

来源：

ORGANIC & BIOMOLECULAR CHEMISTRY | 2009年 / 7卷 / 19期

关键词：

CARBONYLVERBINDUNGEN MIT SAURECHLORIDEN; KETENE-IMINE CYCLOADDITION; GEGENWART TERTIARER AMINE; N-HETEROCYCLIC CARBENES; BETA-LACTAMS; ASYMMETRIC-SYNTHESIS; STAUDINGER REACTION; SODIUM BIS(TRIMETHYLSILYL)AMIDE; DISUBSTITUTED KETENES; ENANTIOSELECTIVE SYNTHESIS;

D O I：

10.1039/b908899g

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

KHMDS and KOtBu are well established as strong, hindered, non-nucleophilic Bronsted bases. However, in the present work these bases are applied as highly active Lewis base catalysts for the formal [2+2] cycloaddition of ketenes with aldehydes and imines.

引用

页码：4009 / 4016

页数：8

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