中文摘要：

在聚乙二醇-水（PEG—H2O）反应介质中，以Pd（OAc）2为催化剂，通过苯甲酰氯和苯硼酸的偶联反应，高产率地合成了二苯甲酮。与其他有机溶剂体系相比，Pd（OAc）2-H2O-PEG体系催化效率高（转换数（TON）可高达2．5×10^4），同时，反应条件温和，反应时间短，产率高，不需要使用污染环境严重的膦配体，是制备二苯甲酮的理想绿色催化体系。

英文摘要：

The palladium acetate-catalyzed synthesis of benzophenone in the mixture of water and PEG was described. Compared with the previous methods in organic systems, catalytic efficiency of Pd（OAc）2-H2O-PEG was higher, which TONs （ turnover numbers） were up to 2.5 × 10^4 . Pd（ OAc）2-H2 O-PEG was active, air stable, recyclable, and avoiding the use of expensive and environmentally unfavorable phosphine ligand. So it is a desired green medium of synthesis of benzophenone.