Polyfunctional Nitriles in Organic Syntheses: A Novel Route to Aminopyrroles, Pyridazines and Pyrazolo[3,4-c]pyridazines
作者:Saleh Al-Mousawi、Moustafa Sherief Moustafa、Herbert Meier、Heinz Kolshorn、Mohamed Hilmy Elnagdi
DOI:10.3390/molecules14020798
日期:——
Phenacylmalononitrile 1 reacts with dimethylformamide dimethyl acetal to yield an enaminone which could be readily converted into a pyrrole or an aminopyridazine by treating with ammonium acetate and hydrazine hydrate, respectively. Compound 1 reacted with hydrazine hydrate in ethanol at room temperature to yield the dihydropyridazine 9 as a single product. In refluxing ethanol this product further
苯酰基
丙二腈 1 与二甲基甲酰胺二甲基
乙缩醛反应生成烯胺酮,通过分别用
乙酸铵和
水合
肼处理,可以很容易地将其转化为
吡咯或
氨基
哒嗪。在室温下,化合物 1 在
乙醇中与
水合
肼反应,得到二氢
哒嗪 9,为单一产物。在回流
乙醇中,该产物进一步与
水合
肼反应,得到新型
二氢吡唑并
哒嗪胺 10。