A compound represented by the following formula (12) useful as an intermediate for production of drug or agricultural chemical:
1
(wherein R
21
to R
25
are each independently a hydrogen atom, a hydroxyl group, a halogen atom, an alkyl group of 1 to 4 carbon atoms, an alkoxy group of 1 to 4 carbon atoms, a perfluoroalkyl group of 1 to 4 carbon atoms, a cyano group, a nitro group, an amino group, a carboxyl group, a thiol group, an alkylthio group of 1 to 4 carbon atoms or a carbamoyl group) can be produced by reacting a compound represented by the formula (13):
2
(wherein R
21
to R
25
have the same definitions as given above) with 1,1-cyclopropanedicarboxylic acid. The compound of the formula (12) is useful as a raw material for production of a pyrrolidinone compound useful as an active ingredient of drug.
以下化合物的
化学式(12)可作为制药或农药中间体使用:1(其中R21到R25分别独立地表示氢原子、羟基、卤素原子、1至4个碳原子的烷基、1至4个碳原子的烷氧基、1至4个碳原子的
全氟烷基、
氰基、硝基、
氨基、羧基、
硫醇基、1至4个碳原子的烷
硫基或
氨基甲酰基)。该化合物可通过将以下化合物(13)与1,1-
环丙烷二
羧酸反应制得:2(其中R21到R25具有以上给出的相同定义)。化合物的
化学式(12)可作为制药活性成分
吡咯烷酮化合物的原料。