5,12-Dibromo-2,9-bis(2-ethylhexyl)anthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-1,3,8,10(2H,9H)-tetraone

for the following products N,N'-bis-(2-Ethylhexyloxy)-1,7-dibromo-3,4,9,10-perylene diimide and 5,12-Dibromo-2,9-bis(2-ethylhexyl)anthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-1,3,8,10(2H,9H)-tetraone