2-(o-Tolyl)-4, 4-dimethyl-2-oxazolines — A new vehicle for facile convergent synthesis of protoberberine alkaloids
作者:Kamal Nain Singh
DOI:10.1016/s0040-4039(98)00744-8
日期:1998.6
A single step synthesis of 8-oxotetrahydroprotoberberines (57-82%) by the addition of lithiated 2-(o-tolyl)-4,4-dimethyl-2-oxazolines on 3,4-dihydroisoquinolines is described. (C) 1998 Elsevier Science Ltd. All rights reserved.