Synthesis of 2,7-diazabiphenylene by thermal extrusion of nitrogen from 2,7,9,10-tetra-azaphenanthrene
Abstract
2,7,9,10-Tetra-azaphenanthrene has been obtained by reduction of 3,3′-dinitro-4,4′-bipyridyl and gives 2,7-diazabiphenylene upon vacuum pyrolysis.