Studies with 2-arylhydrazononitriles: Further investigations on reactivity of 2-arylhydrazononitriles towards hydroxylamine
作者:Sayed M. Riyadh、Hamad M. Al-Matar、Mohamed H. Elnagdi
DOI:10.1002/jhet.5570450405
日期:2008.7
reacted with hydroxylamine hydrochloride to afford isoxazol-5-imine (10), amidoxime (12) and bis-amidoxime (13) derivatives depending upon both the reaction conditions and molar ratio employed. 2-Thiazolyl-2-arylhydrazononitriles (7) and cyanoformazans (8) gave 1,2,3-triazole derivatives (15) and (17) respectively upon treatment with hydroxylamine hydrochloride and concomitant loss of water molecule.
证明了芳基肼腈(6-9)用于合成唑类的用途。因此,取决于所使用的反应条件和摩尔比,芳基偶氮丙二腈(6)与盐酸羟胺反应,得到异恶唑-5-亚胺(10),a肟(12)和双-肟(13)衍生物。在用盐酸羟胺处理并伴随水分子损失的同时,2-噻唑基-2-芳基肼腈(7)和氰基甲醛(8)分别得到1,2,3-三唑衍生物(15)和(17)。新型1,2,4-triazin-5(4 H的形成-一种衍生物(21)已经通过用乙酸酐在乙酸中处理of肟(18)而有效地进行。