Syntheses of 4-(3-cyano-1-triazeno)pyridazine 1-oxides and related compounds.
作者:SHOZO KAMIYA、MASAYUKI TANNO
DOI:10.1248/cpb.28.529
日期:——
4-(3-Cyano-1-triazeno) pyridazine 1-oxides (IIIa-d), 3, 6-dimethyl-4-(3-cyano-1-triazeno) pyridazine 2-oxide and 6-(3-cyano-1-triazeno) tetrazolo [1, 5-b] pyridazine were synthesized by treating the corresponding azides with potassium cyanide, followed by acidification with hydrochloric acid. 4-(3-Cyano-1-triazeno) pyridazine 1-oxide potassium salts (IIa, IIb) gave pyridazine 1-oxides (Va, Vb) on treatment with a mixture of hydrochloric acid and ethanol, and on treatment with hydrochloric acid alone, they gave a mixture of 4-chloropyridazine 1-oxides (VIa, VIb) and 4-aminopyridazine 1-oxides (VIIa, VIIb). The reaction of the cyanotriazene potassium salt (IIa) and hydroxylamine hydrochloride gave 4-[3-(N2-hydroxyamidino)-1-triazeno] pyridazine 1-oxide (X), and a similar compound (XIIa) was also prepared. An azourethan, 3, 6-dimethyl-4-[3-(ethoxycarbonyl)-1-triazeno] pyridazine 2-oxide (XIIb) and an azourea, 6-(3-carbamoyl-1-triazeno) tetrazolo [1, 5-b] pyridazine (XV) were synthesized from the corresponding cyanotriazene potassium salts. Arylazopyridazine 1-oxides (VIIIa-g) and 2-oxides (IXa, b) were synthesized by treating the cyanotriazene potassium salts (IIa-d, XI) with a mixture of 2-naphthol or diphenylamine and ethanol containing hydrochloric acid.
用氰化钾处理相应的叠氮化物,然后用盐酸酸化,合成了 4-(3-氰基-1-三氮烯) 哒嗪 1-氧化物 (IIIa-d)、3, 6-二甲基-4-(3-氰基-1-三氮烯) 哒嗪 2-氧化物和 6-(3-氰基-1-三氮烯) 四唑并 [1, 5-b] 哒嗪。4-(3-氰基-1-三氮唑)哒嗪 1-氧化物钾盐(IIa、IIb)在用盐酸和乙醇的混合物处理时生成哒嗪 1-氧化物(Va、Vb),而在单独用盐酸处理时,它们生成 4-氯哒嗪 1-氧化物(VIa、VIb)和 4-氨基哒嗪 1-氧化物(VIIa、VIIb)的混合物。氰基三嗪钾盐(IIa)和盐酸羟胺反应生成了 4-[3-(N2-羟基氨基)-1-三嗪] 哒嗪 1-氧化物(X),还制备出了类似的化合物(XIIa)。由相应的氰三嗪钾盐合成了氮杂环戊烷、3,6-二甲基-4-[3-(乙氧基羰基)-1-三氮烯]哒嗪 2-氧化物(XIIb)和氮脲、6-(3-氨基甲酰基-1-三氮烯)四唑并[1,5-b]哒嗪(XV)。用 2-萘酚或二苯胺和含盐酸的乙醇的混合物处理氰基三嗪钾盐(IIa-d,XI),合成了芳基哒嗪 1-氧化物(VIIIa-g)和 2-氧化物(IXa,b)。