A phenoxycarboxylic acid derivative having the formula ##STR1## wherein R represents ##STR2## and X.sub.1 represents a hydrogen atom, a halogen atom, a lower alkyl group, trifluoromethyl group, nitro group or cyano group and X.sub.2 represents a hydrogen atom, a halogen atom, a lower alkyl group, nitro group or cyano group, R' represents ##STR3## and R.sub.1 and R.sub.2 are the same and different and respectively represent hydrogen atom or a lower alkyl group, is produced by reacting a phenol compound having the formula ##STR4## with a halogen compound having X--R' wherein X represents a halogen atom in the presence of a base. The reaction is carried out in the presence of a quarternary ammonium salt or a quaternary phosphonium salt in a nonpolar solvent.
具有以下式子的苯氧
羧酸衍
生物 ##STR1## 其中R代表 ##STR2## X.sub.1代表氢原子、卤素原子、低碳基、三
氟甲基基团、硝基或
氰基,X.sub.2代表氢原子、卤素原子、低碳基、硝基或
氰基,R'代表 ##STR3## R.sub.1和R.sub.2分别表示氢原子或低碳基,通过在碱存在下,将具有以下式子的
苯酚化合物 ##STR4## 与具有X-R'的卤素化合物反应来制备。该反应在非极性溶剂中,在季
铵盐或季膦盐的存在下进行。