Studies on heterocyclic chemistry. Part IX. Reaction of 2-(carbonyl)-2H-azirines with hydrazine. A novel and unequivocal synthesis of 1,2,4-triazin-6-ones
作者:Tarozaemon Nishiwaki、Toshinori Saito
DOI:10.1039/j39710002648
日期:——
The reaction of 2H-azirines containing a carbamoyl or alkoxycarbonyl group at C-2 with hydrazine and phenyl-hydrazine has been studied. 2-Aryl-2H-azirine-2-carboxamides produce tetrahydro-1,2,4-triazin-6-ones in moderate yield and aziridines, which are 1 : 1 adducts of the reactants, in small yield. Alkyl 2H-azirine-2-carboxylates and 2H-azirine-2-carboxamides which have no additional substituent at
已经研究了在C-2处含有氨基甲酰基或烷氧羰基的2个H-叠氮基与肼和苯基肼的反应。2-芳基-2 H-叠氮基-2-羧酰胺以中等产率产生四氢-1,2,4-三嗪-6-酮和氮丙啶,它们是反应物的1:1加合物,产率低。在C-2处没有另外的取代基的2 H-叠氮基-2-羧酸烷基酯和2 H-叠氮基-2-羧酰胺提供了高度着色的2-吡唑啉-5-酮衍生物。