Processes for the preparation of triazinones and condensed triazinones, and compounds so obtained
申请人:GLAXO GROUP LIMITED
公开号:EP0009384A1
公开(公告)日:1980-04-02
Compounds of the formula (I)
(in which X represents HS- or a group R,R2N- wherein R, and R2 which may be the same or different represent hydrogen or a straight or branched chain alkyl group containing from 1 to 4 carbon atoms or a benzyl group and R3 represents a C3-2 alkyl group or a C3-2 cycloalkyl group) are prepared by reacting an α-ketoester of the formula (II)
(in which Alk represents an alkyl group) or a precursor thereof with a compound of the formula (III)
The precursor of the compound of formula (II) may be a mixture of isomeric enol esters
The compounds of formula (I) may be converted into compounds of formula (VIII)
in which R, and R2 which may be the same or different represent hydrogen or a straight or branched chain alkyl group containing from 1 to 4 carbon atoms, and R3 is as defined above.
式(I)化合物
式(I)化合物(其中 X 代表 HS- 或基团 R,R2N-,其中 R 和 R2 可以相同或不同,代表氢或含有 1 至 4 个碳原子的直链或支链烷基或苄基,R3 代表 C3-2 烷基或 C3-2 环烷基)是由式(II)的 α-酮酯 (其中 Alk 代表烷基)或其前体与式(III)的化合物反应制备的。
(其中 Alk 代表烷基)或其前体与式(III)化合物反应制备而成
式(II)化合物的前体可以是异构烯醇酯的混合物
式(I)化合物可转化为式(VIII)化合物
其中 R 和 R2 可以相同或不同,代表氢或含有 1 至 4 个碳原子的直链或支链烷基,R3 如上定义。