Synthesis of substituted benz[g]indole-6,9-diones and benzo[h]quinoline-7, 10-diones by heterocyclization of 6-alkynyl-5-amino-1,4-naphthoquinones

Article abstract of DOI:10.1007/s11172-005-0266-8

Substituted benz[g]indole-6,9-diones were synthesized by intramolecular cyclization of 6-alkynyl-5-amino-3-diethylamino-1,-4-naphthoquinones. A method was developed for the preparation of 2-aryl(or alkyl)-4,9-bis(dialkylamino) benzo[h]quinoline-7,10-dione