Improved processes for producing purine derivatives, such as 9-(2-chloro-6-fluorobenzyl)-6-methylaminopurine, which are useful as anticoccidial agents, and new arylazopyrimidine compounds of the formula:
wherein R1 and R2 each is hydrogen, C1-3 alkyl, allyl or dihalobenzyl, and when either one of R1 and R2 is hydrogen, the other is other than hydrogen, and R3 is aryl, and acid addition salts thereof, which are useful as intermediates for production of the purine derivatives.
生产
嘌呤衍
生物(如
9-(2-氯-6-氟苄基)-6-甲基氨基嘌呤)的改进工艺,这些衍
生物可用作抗球虫药,以及新的芳基氮
嘧啶化合物,其式如下:其中 R1 和 R2 各为氢、C1-3 烷基、烯丙基或二卤代苄基,当 R1 和 R2 中的任何一个为氢时,另一个为氢以外的其它基,R3 为芳基,以及其酸加成盐,这些化合物可用作生产
嘌呤衍
生物的中间体。