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A facile method for the synthesis of oxindole based quaternary α-aminonitriles via the Strecker reaction†
Yun-Lin Liu,Feng Zhou,Jun-Jie Cao,Cong-Bin Ji,Miao Ding,Jian Zhou
Organic & Biomolecular Chemistry Pub Date : 07/08/2010 00:00:00 , DOI:10.1039/C0OB00174K
Abstract

The direct α-cyanoamination of isatins using TMSCN has been developed, which is carried out in methanol without any catalyst. A new bifunctional cinchona alkaloid-based phosphinamide catalyst 7 could promote the Strecker reaction of isatins derived ketimine with TMSCN in up to 74% ee.

Graphical abstract: A facile method for the synthesis of oxindole based quaternary α-aminonitriles via the Strecker reaction
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