Studies on Ketene and Its Derivatives. XI. Reaction of Diketene with Phenanthridine
作者:Tetsuzo Kato、Yutaka Yamamoto
DOI:10.1248/cpb.14.752
日期:——
Diketene reacts with phenanthridine giving an adduct (IV). Treatment of IV with conc. Sulfuric acid in ethanol affords a Wollenberg's type compound (V). Both of IV and V react with ammonia to give a pyridone compound (VI). Hydrolysis of IV and V in acidic solution gives phenanthridine, 2, 6-dimethyl-4-pyrone and carbon dioxide.
Diketene 与菲啶反应生成加合物 (IV)。用乙醇中的浓硫酸处理 IV,可得到沃伦伯格型化合物(V)。IV 和 V 与氨反应生成吡啶酮化合物 (VI)。IV 和 V 在酸性溶液中水解会产生菲啶、2, 6-二甲基-4-吡酮和二氧化碳。