申请人:Takeda Chemical Industries, Ltd.
公开号:US03954756A1
公开(公告)日:1976-05-04
2-Alkyl-4-amino-5-formylaminomethylpyrimidine is produced in a higher yield and using less process steps than the known methods by subjecting .beta.-aminopropionitrile to formylation in the presence of metal alcoholate, subjecting the resulting metal salt of .alpha.-formyl-.beta.-formylaminopropionitrile to alkylation or acylation, followed by allowing the thus produced .alpha.-alkoxy (or acyloxy)-methylene-.beta.-formylaminopropionitrile to react with an amidine.
通过在金属醇盐的存在下,将β-氨基丙腈暴露于甲酰化,从而以比已知方法更高的产量和更少的工艺步骤制备2-烷基-4-氨基-5-甲酰氨基甲基嘧啶,将产生的α-甲酰-β-甲酰氨基丙腈金属盐暴露于烷化或酰化,随后允许因此产生的α-烷氧基(或酰氧基)-亚甲基-β-甲酰氨基丙腈与脲反应。