A facile method for the synthesis of oxindole based quaternary α-aminonitriles via the Strecker reaction
作者:Yun-Lin Liu、Feng Zhou、Jun-Jie Cao、Cong-Bin Ji、Miao Ding、Jian Zhou
DOI:10.1039/c0ob00174k
日期:——
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.
已开发出使用TMSCN直接对异靛酮进行α-氰胺化反应,该反应在无催化剂的情况下在甲醇中进行。一种新的基于奎宁生物碱的双功能磷酰胺催化剂7能够促进源自异靛酮的酮亚胺与TMSCN的斯特雷克反应,最高可达74%的对映体过剩。