Reactions with 3-Pyrazolin-5-ones: Synthesis of some 4-Substituted 2,3-Dimethyl-1-phenyl-3-pyrazolin-5-ones
作者:Ibrahim A. El-Sakka、Adel Kandil、Mohamed H. El-Moghayar
DOI:10.1002/ardp.19833160115
日期:——
4‐Acetylantipyrine (1) was condensed with aromatic or heterocyclic aldehydes to yield the cinnamoylidene derivatives 4a—d. Compound 4b was converted into the pyrazolinylantipyrine derivative 9 by hydrazine hydrate. 4‐(Chloroacetyl)antipyrine (2) reacted with aldehydes to yield the furan‐2‐one derivatives 11 or the dihydroxy derivative 12. The behaviour of 4‐formylantipyrine toward methylenenitriles
4-乙酰安替比林(1)与芳香醛或杂环醛缩合得到肉桂基衍生物4a-d。化合物4b通过水合肼转化为吡唑啉基安替比林衍生物9。4- (Chloroacetyl) antipyrine (2) 与醛反应生成呋喃-2-one 衍生物 11 或二羟基衍生物 12。研究了 4-formylantipyrine 对亚甲腈的反应。