Imidazolin-2-ylidenaminophosphines as Cooperative Ligands for the Activation of Strong σ Bonds (A10)

项目A10涉及开发以咪唑啉-2-亚氨基膦(IAP)为合作配体的双功能和双金属催化剂作为合作底物活化的新模式。IAP是一种非常强的给体配体，其电子释放特性超过了烷基膦或N-杂环卡宾。另一个特征是存在附着在磷原子上的碱性亚氨基氮原子。因此，与iAp配体的金属络合物为双官能团或双金属活化热能较强的σ键提供了一个独特的平台。在铜催化(脱氢)反应和镍/钯催化的交叉偶联反应中，IAP作为合作配体的潜力将被发掘。

Project A10 is concerned with the development of new modes of cooperative substrate activation using bifunctional and bimetallic catalysts that comprise imidazolin-2-ylidenaminophosphines (IAPs) as cooperative ligands. IAPs are remarkably strong donor ligands and their electron-releasing character exceeds that of alkylphosphines or N-heterocyclic carbenes. A further characteristic feature is the presence of basic imino-nitrogen atoms attached to the phosphorus atom. Therefore, metal complexes with IAP ligands provide a unique platform for the bifunctional or bimetallic activation of enthalpically strong σ bonds. The potential of IAPs as cooperative ligands in Cu-catalyzed (de)hydrogenation reactions and Ni/Pd-catalyzed cross-coupling reactions will be explored.