A new route to phenazines

T Emoto, N Kubosaki, Y Yamagiwa, T Kamikawa

Index: Emoto, Takahiro; Kubosaki, Nobuo; Yamagiwa, Yoshiro; Kamikawa, Tadao Tetrahedron Letters, 2000 , vol. 41, # 3 p. 355 - 358

Full Text: HTML

Citation Number: 49

Abstract

Naturally occurring phenazines have attracted considerable attention because of their interesting biological activities. 1 One of the most promising methods for synthesizing polysubstituted phenazines developed by Holliman and co-workers 2 was the reductive cyclization of o-nitrodiphenylamines (Method C in Scheme 1). However, the yield was poor when competitive cyclization occurred. Recently, N-arylation has become more accessible owing to the advent of a ...