中文摘要：

在Pd／C催化下，以甲酰肼为还原剂，卤代芳烃通过还原偶联反应能高选择性地合成相应的联苯化合物．具有不同取代基的卤代芳烃的还原偶联反应产率在52％-94％之间．

英文摘要：

The reductive coupling of aryl halides to form the corresponding biaryls was effected with high selectivity in water, using formic hydrazide as a reducing agent in the presence of a catalytic amount of Pd/C. Various substituted aryl halides proceed smoothly to afford the corresponding biaryls with good yields in the range of 52%-94%.