H. Irikawa, Susumu Mutoh, M. Uehara
Sep 1, 1989
Citations
0
Influential Citations
6
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
Methyl 2,3,5,6,11,11b-Hexahydro-3-oxo-1H-indolizino[8,7-b]indole-5-carboxylate was converted into the tetrahydro, dihydro, and dehydro esters using N-bromosuccinimide. On treatment with acetic acid, the 6a-bromo indolenine derivative bearing a substituent on C-11b gave a mixture of 8- and 9-bromo compounds by migration of the bromine to the benzene ring, while the corresponding 6a-chloro derivative afforded the oxindole.