A new protocol for the palladium‐catalyzed free‐amine‐directed alkenylation of C(sp2)H bonds and cycloamination is described. Substituted biaryl‐2‐amines react with various alkenes, including electron‐deficient alkenes, aryl alkenes and alkyl alkenes, to give the corresponding phenanthridines with exclusive regioselectivity. The use of α‐branched styrenes leads to the formation of tricyclic compounds
Unprecedented Hydrothermal Reaction of <i>O</i>-Phenylaniline and Related Derivatives with Cyclic Ketones. A Novel Approach to the Construction of Phenanthridine and Quinoline Ring Systems
作者:Barun K. Mehta、Kazumichi Yanagisawa、Motoo Shiro、Hiyoshizo Kotsuki
DOI:10.1021/ol0300120
日期:2003.5.1
[reaction: see text] A new method for synthesizing phenanthridine and its related compounds was developed using the condensation of o-phenylaniline and its homologues with cyclic ketones under hydrothermal conditions.