名称:
Synthesis of [a]annulated carbazoles from indol-2,3-dione
摘要:
Reaction of ethyl chloroformate with 3-aroylmethylindol-2(3H)-ones 5 affords the ethyl 3-[(2-aryl-2-ethoxycarbonyloxy)ethenyl]-2-(ethoxycarbonyloxy)indole-1-carboxylates 6 from which the corresponding [a]annulated carbazoles 10 are obtained via 6pi-electrocyclization.
DOI:
10.1016/s0040-4020(01)81301-6