The reaction of 4-amino-1H-1, 5-benzodiazepine-3-carbonitrile hydrochloride (1) with hydroxylamine gave a ring-opened compound, 3-amino-3-(o-aminoanilino)-2-cyano-2-propenaloxime (5). Compound 5 was converted to 5-(o-aminoanilino)-4-cyanoisoxazole (6) on treatment with hydrochloric acid. Compound 1 was also reacted with methoxyamine to give 2-(1'-cyano-2'-methoxyaminovinyl) benzimidazole (8). On the other hand, hydrolysis of 1 at pH 1 gave 2-cyanomethylbenzimidazole hydrochloride (12).
4-
氨基-1H-1,5-
苯并二氮杂卓-3-甲腈盐酸盐(1)与
羟胺反应生成开环化合物 3-
氨基-3-(邻
氨基
苯胺基)-2-
氰基-2-
丙烯肟(5)。化合物 5 经
盐酸处理后转化为 5-(邻
氨基
苯胺基)-4-
氰基
异噁唑(6)。化合物 1 还可与
甲氧基胺反应,生成 2-(1'-
氰基-2'-甲氧基
氨基
乙烯基)
苯并咪唑(8)。另一方面,1 在 pH 值为 1 的条件下
水解可得到
2-氰甲基苯并咪唑盐酸盐(12)。