树脂担载金催化苯胺衍生物氧化羰化制氨基甲酸甲酯

树脂类高聚物担载的各种过渡金属和贵金属催化剂在加氢、选择氧化、聚合、氢甲酰化等反应中已有应用^1,2]，金催化剂作为一种新型的催化材料正日益引起人们的重视。继无机氧化物担载金催化剂得到广泛使用后^3-7]，有机金催化下的醇醛缩合^8]、烯烃羧化^9]以及锡烷偶联^10]等反应的效果亦很好。最近，我们将有机金配合物催化剂用于胺类化合物氧化羰化制取氨基甲酯的反应^ 11]，结果很好。但该均相催化体系仍存在催化剂分离回收和重复使用困难等问题。我们将金担载于各种高聚物上并用于苯胺及其衍生物的氧化羰化时，发现使用大孔弱酸性阳离子交换树脂作为催化剂载体对该反应的活性很高。相对于以往广泛研究的钯、钌、铑等的各种配合物加助催化组分催化剂体系^12-14]，这一体系简单、高效、易分离，且能够重复使用。

The Oxidative Carbonylation of Aniline and Its Derivatives in the Presence of Resin Supported Gold

Novel resin supported gold catalysts were developed for the synthesis of carbamates by oxidative carbonylation of aniline and its derivatives. At 175 ℃ and 5.0 MPa, the oxidative carbonylation of aniline to the corresponding carbamates over these catalysts could be proceeded with a high conversion(96%), selectivity(99%) and 532 for TOFwas achieved. The resin supported gold castalyst would be reusable and the catalytic performance was much better than that of the resin supported Pd catalyst.