Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 70, Issue 8, Pages 3271-3274Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jo0477998
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Reactions of lithiated heteroaryl- (or aryl-) methylbenzo-triazoles 4a-e with heteroaryl (or aryl) esters 5a-f give a-benzotriazolyl ketones 6a-n in average yields of 90-95%. Oxidation of ketones 6a-l in aqueous DMSO in the presence of oxygen and sodium bicarbonate gave heteroaryl- (aryl-) 1,2-ethanediones 7a-I in average yields of 60-80%.
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