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: ##STR1## wherein R.sup.1 and R.sup.2 each is hydrogen, C.sub.1-3 alkyl, allyl or dihalobenzyl, and when either one of R.sup.1 and R.sup.2 is hydrogen, the other is other than hydrogen, and R.sup.3 is aryl, and acid addition salts thereof, which are useful as intermediates for production of the purine derivatives.
改进的生产
嘌呤衍
生物的过程,例如9-(2-
氯-6-
氟苯基)-6-甲基
氨基
嘌呤,这些衍
生物可用作抗球虫剂,以及新的芳基偶氮
嘧啶化合物,其
化学式为:##STR1## 其中R.sup.1和R.sup.2分别为氢、C.sub.1-3烷基、烯丙基或二卤苯基,当R.sup.1和R.sup.2中的任一者为氢时,另一个不是氢,R.sup.3为芳基,以及它们的酸盐加合物,这些化合物可用作生产
嘌呤衍
生物的中间体。