Chemical and Pharmaceutical Bulletin p. 2627 - 2631 (1992)
Update date:2022-08-10
Topics:
Miyashita
Matsuda
Higashino
N-Phenylbenzimidoyl chlorides 10, 11, 12, 13, and 14 were aroylated with aromatic aldehydes 9 in the presence of a catalytic amount of 1,3-dimethylimidazolium iodide (1) to afford N-(α-aroylbenzylidene)anilines 15, 16, 17, 18, and 19. Treatment of the resulting N-(α-aroylbenzylidene)anilines (15-19) with diluted hydrochloric acid (HCl) produced the benzils 20, 21, 22, 23, and 24 in excellent yields.
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