Electronic Ligand Modifications on Cobalt Complexes and Their Application toward the Semi-Hydrogenation of Alkynes and Para-Hydrogenation of Alkenes
作者:Safiyah R. Muhammad、Joseph W. Nugent、Kenan Tokmic、Lingyang Zhu、Jumanah Mahmoud、Alison R. Fout
DOI:10.1021/acs.organomet.9b00337
日期:2019.8.26
The effect of the electronic modification of a bis(carbene) pincer ligand, (MesCCCR), on cobalt catalysis has been investigated. The pincer ligand was modified in the para position of the aryl backbone with a tert-butyl and trifluoromethyl moiety to yield the electronic variants that were applied toward the synthesis and characterization of several cobalt complexes, (MesCCCR)Co. The application of
A general and highlyenantioselective method for the epoxidation of cis‐alkenylsilanes, in which the epoxysilanes were obtained with complete enantioselectivity in the presence of 0.5–2 mol % of a Ti–Salalen complex. The combination of this epoxidation method and the following transformations is a powerful approach that provides synthetically important epoxides, such as styrene oxides and geminally