Phenoxy acetic acid was prepared in the pressence of chloroacetic acid, phenol and NaOH under microwave irradiation. The optimum condition was obtained. The yield could reach 97.3%.

• 用微波辐射合成苯氧乙酸，考察了不同反应条件对收率的影响，优化出最佳反应条件，收率可达97．3%25。