申请人:Trustees of Boston College, The
公开号:US10336781B2
公开(公告)日:2019-07-02
Highly active, recoverable and recyclable transition metal-based metathesis catalysts and their organometallic complexes including dendrimeric complexes are disclosed, including a Ru complex bearing a 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene and styrenyl ether ligand. The heterocyclic ligand significantly enhances the catalytic activity, and the styrenyl ether allows for the easy recovery of the Ru complex. Derivatized catalysts capable of being immobilized on substrate surfaces are also disclosed. The present catalysts can be used to catalyze ring-closing metathesis (RCM), ring-opening (ROM) and cross metatheses (CM) reactions, and promote the efficient formation of various trisubstituted olefins at ambient temperature in high yield.
本发明公开了高活性、可回收和可循环的过渡金属基偏合成催化剂及其有机金属配合物(包括树枝状配合物),其中包括一种带有 1,3-二甲基-4,5-二氢咪唑-2-亚基和苯乙烯基醚配体的 Ru 配合物。杂环配体大大提高了催化活性,而苯乙烯醚则使 Ru 复合物易于回收。此外,还公开了能够固定在基质表面的衍生催化剂。本催化剂可用于催化闭环复分解反应(RCM)、开环反应(ROM)和交叉复分解反应(CM),并能促进在常温下高效、高产地生成各种三取代烯烃。