Iptycen-based, hemispherical NHC-Ligands for Homogeneous Catalysis with Au and Ru

该项目旨在生产作为N-杂环卡宾前体的新型基于异蝶烯的唑鎓或唑鎓盐，合成衍生的金属络合物及其在选定的均相催化反应中的用途。对这类化合物的兴趣源于基于N-异蝶烯基的NHC配体的特殊立体化学性质。这种新配体类别的基本合成开发最终旨在实现基于N-异蝶烯基的NHC金属络合物在均相催化中的潜力。活动将集中在各种催化反应的新的和进一步的发展，以全面展示这类配体的好处。具体而言，计划研究以下反应：a）用于（区域选择性）氢化炔的双戊二烯基-NHC金络合物;和c）用于立体转化和立体保留烯烃复分解反应的双戊二烯基-NHC钌络合物。

The project aims at the production of novel iptycene-based azolium or azolinium salts as precursors of N-heterocyclic carbene, the synthesis of derived metal complexes and their use in selected homogeneously catalyzed reactions. The interest in this compound class results from the special stereochemical properties of N-iptycenyl-based NHC ligands. The fundamental synthetic development of this new ligand class ultimately aims at realizing the potential of N-iptycenyl-based NHC metal complexes in homogeneous catalysis. Activities will focus on the new and further development of various catalysis reactions in order to comprehensively demonstrate the benefits of this ligand class. Specifically, it is planned to investigate the following reactions: a) Bispentiptycenyl-NHC gold complexes for the (regio-selective) hydrogenation of alkynes; and c) Bistriptycenyl-NHC ruthenium complexes for stereoinverting and stereoretentive olefin metathesis reactions.