Bromination of Acetylhaplophyllidine by Molecular Br2 and N-Bromosuccinimide
摘要
The influence of the 7-O-acetyl group of acetylhaplophyllidine (2) on the bromination process was studied. Acetylhaplophyllidine in bromination by molecular Br2 and N-bromosuccinimide under various conditions formed multicomponent mixtures consisting of bromination products of intramolecular annelation (3, 4, and 6) and bromo-derivatives of 4-oxofuranoquinolines (5 and 7).