Synthesis of azapenams, diazepinones, and dioxocyclams via the photolytic reaction of chromium alkoxycarbene complexes with imidazolines

C Betschart, LS Hegedus

文献索引：Betschart; Hegedus Journal of the American Chemical Society, 1992 , vol. 114, # 13 p. 5010 - 5017

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被引用次数: 65

摘要

Abstract: Photolysis of chromium alkoxycarbene complexes with N-(benzy1oxycarbonyl) imidazolines produced protected azapenams. Hydrogenolysis gave free azapenams which were stable, one of which was characterized by X-ray crystallography. Hydrogenolysis under acidic conditions produced hexahydro-l, 4-diazepin-5-ones. Treatment of the free azapenams with camphorsulfonic acid produced unsaturated 14-membered ...