Synthesis of 2-aza[6]helicene and attempts to synthesize 2,14-diaza[6]helicene utilizing metal-catalyzed cycloisomerization

J Org Chem. 2010 May 7;75(9):3137-40. doi: 10.1021/jo100252a.

Abstract

A modular synthetic approach leading to 2-aza[6]helicene is reported. It involves assembly of key hetero biphenylylnaphthalenes from functionalized building blocks and study of their metal catalyzed cycloisomerization.