A Neophyl Palladacycle as an Air- and Thermally Stable Precursor to Oxidative Addition Complexes
作者:Ryan P. King、Shane W. Krska、Stephen L. Buchwald
DOI:10.1021/acs.orglett.1c02307
日期:2021.10.15
The utilization of isolated Palladium OxidativeAdditionComplexes (OACs) has had a significant impact on Pd-catalyzed and Pd-mediated cross-coupling reactions. Despite their importance, widespread utility of OACs has been limited by the instability of their precursor complexes. Herein, we report the use of Cámpora’s palladacycle as a new, more stable precursor to Pd OACs. Using this palladacycle,
Palladium-Catalyzed C–O Cross-Coupling of Primary Alcohols
作者:Hong Zhang、Paula Ruiz-Castillo、Stephen L. Buchwald
DOI:10.1021/acs.orglett.8b00325
日期:2018.3.16
catalyst systems are described, which together provide mild and general conditions for the Pd-catalyzed C–O cross-coupling of primary alcohols. For activated substrates, such as electron-deficient arylhalides, the commercially available ligand L2 promotes efficient coupling for a variety of alcohol nucleophiles. In the case of unactivated electrophiles, such as electron-rich arylhalides, the new