NHC-Pd-PEPPSI complexes with bulky benzyladamantyl substituted N-heterocyclic carbenes (NHC) were synthesized and characterized by NMR, HRMS, and micro analysis. These complexes were then used for Suzuki-Miyaura coupling reactions between aryl bromides and phenylboronic acid. With low catalyst loading, all synthesized complexes rapidly catalyzed the Suzuki-Miyaura cross-coupling reaction in i-PrOH/water (1:3 v/v) at room temperature in air. All palladium compounds were stable and had high catalytic activity for the Suzuki-Miyaura coupling reaction.

中文翻译：

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位阻N-苄金刚烷基取代的苯并咪唑-2-亚烷基钯配合物的合成及其在水介质中的催化活性研究

合成了具有大体积苄基金刚烷基取代的N-杂环卡宾（NHC）的NHC-Pd-PEPPSI复合物，并通过NMR，HRMS和显微分析对其进行了表征。然后将这些络合物用于芳基溴化物和苯基硼酸之间的Suzuki-Miyaura偶联反应。在低催化剂负载下，所有合成的络合物均在室温下于空气中于i -PrOH /水（1：3 v / v）中快速催化Suzuki-Miyaura交叉偶联反应。所有的钯化合物都是稳定的，并且对铃木-宫浦偶合反应具有高催化活性。