Novel Ring Transformations of 4-Acylamino- and 4-Dimethylaminomethyleneamino-1<i>H</i>-1,5-benzodiazepine-3-carbonitriles to Pyrimidine-5-carbonitriles
作者:Kaname Takagi、Tomoji Aotsuka、Hikari Morita、Yoshihisa Okamoto
DOI:10.1055/s-1987-27951
日期:——
Reaction of 4-acylamino-1H-1,5-benzodiazepine-3-carbonitriles 1 with methylamine gave 2-alkyl-4-(o-aminophenylimino)-1-methyl-1,4-dihydropyrimidine-5-carbonitriles 4. 4-Dimethylaminomethyleneamino-1H-1,5-benzodiazepine-3-carbonitrile 2 also underwent analogous ring transformation with methylamine and ammonia to give pyrimidine-5-carbonitriles 9 and 10. The pyrimidines so formed were converted to benzimidazoles 6 and 12.
4- 乙酰氨基-1H-1,5-苯并二氮杂卓-3-甲腈 1 与甲胺反应,得到 2-烷基-4-(邻氨基苯基亚氨基)-1-甲基-1,4-二氢嘧啶-5-甲腈 4。4-二甲基氨基亚甲基氨基-1H-1,5-苯并二氮杂卓-3-甲腈 2 也与甲胺和氨进行了类似的环转化,得到了嘧啶-5-甲腈 9 和 10。由此形成的嘧啶被转化为苯并咪唑 6 和 12。