Abstract
Condensation of ethyl 3-aryl-3-bromo-2-oxopropanoates with o-phenylenediamine in acetic acid gave 3-(α-bromobenzyl)quinoxalin-2(1H)-ones which were converted in high yield into the corresponding 3-aroylquinoxalin-2(1H)-ones via oxidative dehydrobromination in dimethyl sulfoxide according to Kornblum.
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