Photochemical rearrangement in the 1,5-diazabicyclo[5,1,0]octa-3,5-diene system
Abstract
Irradiation of 2,6,8-triphenyl-1,5-diazabicyclo-[5,1,0]octa-3,5-diene affords, 3,6-diphenyl-5,6-dihydrobenzo[f]quinoxaline, the formation of which can be rationalized by a sequence of four discrete steps.