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考察了活性炭负载钯催化剂对有机锡烷和有机卤化物如卤代烷、α -卤代酸酯、α -卤代酮等偶联反应的催化作用 ,发现该负载钯催化剂对偶联反应具有很高的催化活性 ,且制备容易 ,可循环使用。对反应机理进行了研究和探讨 ,XPS实验表明 ,催化剂中的钯可以看成是两配位不饱和的 ,经过氧化加成、金属转换、还原消除过程完成催化反应
The catalytic activity of palladium supported on activated carbon for the coupling reaction of organostannanes and organic halides such as alkyl halides, α - haloacids and α - haloketones was investigated. The catalytic activity of the supported palladium catalyst for the coupling reaction was investigated Activity, and preparation is easy, can be recycled. The reaction mechanism was studied and discussed. XPS experiments showed that the palladium in the catalyst can be regarded as two-coordinate unsaturated, and the catalytic reaction can be completed through oxidation and addition, metal conversion and reduction and elimination