Reactions of 3-([(trifiuoromethyl)sulfonyl]oxy)-1H-indole derivatives with diamines and carbon nucleophiles. Synthesis of 6H-indolo[2,3- b]quinoxaline derivatives

Article abstract of DOI:10.1016/S0040-4020(98)00650-4

Indolic triflate reacted with 1,2-diamines to afford pyrazino[2,3- b]indole or indolo[2,3-b] quinoxaline. Carbon nucleophiles such as malonate derivatives also reacted with indolic triflate in absence of palladium catalyst to afford 2-(3-oxo-2,3-dihydro-1