申请人:——
公开号:US20040242607A1
公开(公告)日:2004-12-02
A process for the preparation of a compound of the general formula (I): wherein R
1
is a 4-pyrimidinyl ring substituted at the 6-position by halo, hydroxy, 2-cyanophenoxy, 2,6-difluorophenoxy, 2-nitrophenoxy or 2-thiocarboxamidophenoxy and R
2
is any group which can be transesterified to form a methyl ester, which comprises treating a compound of general formula (II): wherein R
1
and R
2
have the meanings given above, with a formylating agent and subsequently treating the formylated product with a methylating agent.
1
一种通式(I)化合物的制备方法: 其中 R
1
是在 6 位被卤代、羟基、2-氰基苯氧基、2,6-二氟苯氧基、2-硝基苯氧基或 2-硫代脒基苯氧基取代的 4-嘧啶基环,且 R
2
是任何可以酯交换形成甲酯的基团,包括处理通式(II)的化合物: 其中 R
1
和 R
2
具有上述含义,用甲酯化剂处理甲酯化产物,然后用甲酯化剂处理甲酯化产物。
1