An object of the invention is to to provide a method of triazine derivatives conveniently and in a high yield
A method of producing a 1,2,4-triazin-3-one derivative represented by the formula:
wherein R1 is an optionally substituted hydrocarbon residual group; X stands for carbonyl group, thiocarbonyl group or an optionally substituted methylene group; and dashed line means that a double bond may optionally be formed, which comprises by subjecting a semicarbazone derivative represented by the formula:
wherein R1 stands for an optionally substituted hydrocarbon residual group; R2 and R3 stand for hydrogen, an optionally substituted hydrocarbon residual group or an electron withdrawing group; and R4 stands for an optionally substituted alkyl group to a ring-closure reaction.
本发明的目的是提供一种方便、高产的三嗪衍
生物的方法
一种生产由式表示的
1,2,4-三嗪-3-酮衍
生物的方法:
其中R1为任选取代的烃残基;X代表羰基、
硫代羰基或任选取代的亚甲基;虚线表示可任选形成双键,该方法包括将由式表示的半
咔唑酮衍
生物:
其中 R1 代表任选取代的烃残基;R2 和 R3 代表氢、任选取代的烃残基或取电子基团;R4 代表任选取代的烷基。