The application of an easily prepared and highly active polydopamine-supported Pd nanoparticles catalyst in Suzuki cross-couplings and tandem Suzuki cross-coupling/catalytic transfer hydrogenation sequences under green reaction conditions is described. In Suzuki cross-couplings between aryl bromides and arylboronic acids Pd concentrations down to ppm levels could be used, while reactions were completed within minutes. Heteroaryl bromides needed somewhat longer reaction times but could be transformed under otherwise identical conditions. The efficiency of the Suzuki cross-couplings made them compatible with the mechanistically different catalytic nitroarene transfer hydrogenations, yielding valuable biphenyl aniline products in a mild, one-pot tandem fashion. The influence of reaction time, temperature and Pd particle size on the catalyst efficiency and recyclability is also examined.

描述了一种易于制备且高活性的聚多巴胺负载的Pd纳米颗粒催化剂在绿色反应条件下在Suzuki交叉偶联和串联Suzuki交叉偶联/催化转移加氢序列中的应用。在Suzuki中，芳基溴化物和芳基硼​​酸之间的交叉偶联可使用Pd浓度低至ppm的浓度，而反应可在数分钟内完成。杂芳基溴化物需要更长的反应时间，但可以在其他相同条件下转化。铃木交叉偶联剂的效率使其与机理上不同的催化硝基芳烃转移氢化反应兼容，从而以温和的一锅串联方式生产出有价值的联苯苯胺产品。反应时间的影响