Formation of 1-methyl[1,2,4]triazolo[4,3-<i>a</i>] quinazolin-5(4<i>H</i>)-ones by reaction of 2-hydrazinoquinazolin-4(3<i>H</i>)-ones with acetylacetone
作者:Svitlana Yuriyivna Danylchenko、Oleksandr Grygorovych Drushlyak、Svitlana Sergiyivna Kovalenko、Sergiy Mykolayovych Kovalenko
DOI:10.1515/hc-2015-0104
日期:2015.8.1
Abstract Reaction of 2-hydrazinoquinazolin-4(3H)-ones with acetylacetone results in the formation of 1-methyl[1,2,4]triazolo[4,3-a]quinazolin-5(4H)-ones instead of 2-(3,5-dimethyl-1H-pyrazol-1-yl)quinazolin-4(3H)-ones. Under similar conditions, the 7-hydrazinocarbonyl group in quinazolin-4(3H)-one moiety is transformed into a pyrazole derivative, which can be replaced by amine with the amide formation
摘要 2-肼基喹唑啉-4(3H)-酮与乙酰丙酮反应生成1-甲基[1,2,4]三唑并[4,3-a]喹唑啉-5(4H)-酮而不是2- (3,5-二甲基-1H-吡唑-1-基)喹唑啉-4(3H)-酮。在类似条件下,喹唑啉-4(3H)-one 部分中的 7-肼基羰基转化为吡唑衍生物,该衍生物可以被胺取代并形成酰胺。