A New Rearrangement of 2,4,6,8-Tetraphenyl-3,9-diazabicyclo[3.3.1]nonan-9-one leading to 5,7-Diphenyl-5,6,7,8-tetrahydrobenzo[b]-1,6-naphthyridine

Balasubramanian Sivakumar, *Ud

Abstract

Treatment of 2,4,6,8-Tetraphenyl-3,9-diazabicyclo[3.3.1]nonan-9-one (4) with hydrazoic acid in CHCl3-H2SO4 mixture resulted in an new rearrangement leading to 5,7-Diphenyl-5,6,7,8-tetrahydrobenzo[b]-1,6-naphthyridine (6).