The Reaction of Nitriles with Phosgene. V. Cyclization Reactions of<i>N</i>-(α-Chlorobenzylidene)carbamoyl Chloride
作者:Shozo Yanagida、Masaaki Yokoe、Masataka Ohoka、Saburo Komori
DOI:10.1246/bcsj.44.2182
日期:1971.8
N-(α-Chlorobenzylidene)carbamoyl chloride (1) reacts with hydrazine hydrate to give 3-phenyl-1,2,4-triazolone (2), with sodium azide in the presence of water to give 5-phenyltetrazole (3), and with aliphatic nitriles in the presence of hydrogen chloride to give 6-chloro-2-phenyl-5-substituted-4(3H)-pyrimidones (5) and 4,6-dichloro-2-phenyl-5-substituted pyrimidines (6). However, the reaction of 1 with trichloroacetonitrile
N-(α-氯亚苄基)氨基甲酰氯(1)与水合肼反应生成3-苯基-1,2,4-三唑酮(2),在水存在下与叠氮化钠反应生成5-苯基四唑(3),并在氯化氢存在下与脂肪族腈反应得到 6-氯-2-苯基-5-取代-4(3H)-嘧啶酮 (5) 和 4,6-二氯-2-苯基-5-取代嘧啶 (6 )。然而,1 与三氯乙腈或新戊腈在氯化氢存在下的反应没有得到预期的三嗪。