| Literature DB >> 35594167 |
Kristine Klimovica1, Julius X Heidlas1, Irvin Romero1, Thanh V Le1, Olafs Daugulis1.
Abstract
We report here "sandwich" diimine-copper(I) catalysts for C(sp3 )-H bond functionalization. Reactions of alkanes and ethers with trimethylsilyldiazomethane, ethyl diazoacetate, and trifluoromethyl-diazomethane have been demonstrated. We also report C(sp3 )-H bond methylation, benzylation, and diphenylmethylation by diazomethane, aryldiazomethanes, and diphenyldiazomethane. These reactions are rare examples of base-metal catalyzed, intermolecular C(sp3 )-H functionalizations by employing unactivated diazo compounds. Electrophilicity and unique steric environment of "sandwich"-copper catalysts are likely reasons for their catalytic efficiency.Entities:
Keywords: Carbenes; Copper; C−H Activation; Diazo Compounds; Diimines
Year: 2022 PMID: 35594167 PMCID: PMC9329213 DOI: 10.1002/anie.202200334
Source DB: PubMed Journal: Angew Chem Int Ed Engl ISSN: 1433-7851 Impact factor: 16.823