Development of Aquacatalytic Polymer-Dispersed Nanometal Composites

开发了一种铂、钯纳米粒子的两亲性树脂分散体，在氧气或空气气氛下对水中多种醇类化合物的有氧氧化具有很高的催化活性。以PdC12(CH3CN)2为原料，通过自组装法制备了一种新型固相三维金属有机配位网络催化剂；以PdC12与主链紫精聚合物为原料，通过络合还原反应制备了新型钯纳米粒子固相自组装催化剂。这种不溶的纳米催化剂纳米钯催化剂有效地促进了酮与伯醇的α-烷基化反应。通过H3PW12040和聚烷基吡啶的离子组装，制备了一种紧密缠结的聚磷钨酸盐催化剂，该催化剂能有效地促进各种烯醇和烯酸的氧化环化反应。制备了具有平面配位结构和功能取代基的钳形络合物，实现了立体选择性催化和超络合物的形成。

An amphiphilic resin-dispersion of nanoparticles of platinum and palladium were developed which exhibited high catalytic activity in aerobic oxidation of a wide variety of alcohols in water with an oxygen or air atmosphere. A novel solid-phase 3D metal-organic coordination network catalyst was prepared via self-assembly from PdC12(CH3CN)2 and a trisphosphine hub with three flexible alkylchain linkers.A novel solid-phase self-organized catalyst of palladium nanoparticles was prepared from PdC12 with main-chain viologen polymers via complexation and reduction. This insoluble nanocatalyst nano-Pd catalyst efficiently promoted a-alkylation of ketones with primary alcohols. A tightly convoluted polymeric phosphotungstate catalyst was prepared via ionic-assembly of H3PW12040 and poly (alkylpyridinium).An oxidative cyclization of various alkenols and alkenoic acids was efficiently promoted by the polymeric catalyst. The pincer complexes bearing a plane coordination structure and functional substituents were prepared to realize stereoselective catalysis and supra complex formation.