Synthesis of Supramolecular Iridium Catalysts and Their Use in Enantioselective Visible-Light-Induced Reactions
作者:Thorsten Bach、Alexander Böhm
DOI:10.1055/s-0035-1561378
日期:——
Iridium complexes were prepared which are covalently linked via a bipyridine ligand to a chiral octahydro-1H-4,7-methanoisoindol-1-one skeleton. The skeleton allows for two-point hydrogen bonding to prochiral lactams, which can be processed in iridium-catalyzed photochemical reactions. Attempts to use the iridium complexes in reactions, which typically involve photoinduced electron transfer, failed
制备了铱配合物,其通过联吡啶配体与手性八氢-1H-4,7-methanoisoindol-1-one 骨架共价连接。骨架允许与前手性内酰胺形成两点氢键,可以在铱催化的光化学反应中进行处理。在通常涉及光诱导电子转移的反应中使用铱配合物的尝试未能提供所需的对映选择性。如果用作三线态敏化剂,则复合物在光化学环氧化物重排中表现出改善的性能和适度的对映选择性(高达 29% ee)。