申请人:Sumitomo Chemical Company, Limited
公开号:US03968124A1
公开(公告)日:1976-07-06
A process for preparing a substituted phenyl-acetic acid ester of the formula (I), ##SPC1## wherein R.sub.1 is an ethyl group or an isopropyl group, R.sub.2 is a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group, a methoxy group, a halogen atom or a methylenedioxy group, which comprises reacting a quaternary ammonium salt of the formula (III), ##SPC2## wherein X is a halogen atom, and A is an alkylamine, pyridine or an N-alkylaniline, with a carboxylic acid of the formula (II), ##SPC3## wherein R.sub.1 and R.sub.2 are each as defined above, its reactive derivative, or a mixture of the acid and its reactive derivative.
一种制备式(I)的取代苯乙酸酯的方法,其中R1是乙基基团或异丙基基团,R2是氢原子,C1-C4烷基,甲氧基,卤素原子或亚甲二氧基基团。该方法包括将式(III)的季铵盐与式(II)的羧酸,其反应衍生物或酸和其反应衍生物混合物反应,其中X是卤素原子,A是烷基胺,吡啶或N-烷基苯胺,式(II)中R1和R2的定义如上所述。