Pd-catalyzed oxidative acylation of 2-phenoxypyridines with alcohols via C–H bond activation
作者:Minyoung Kim、Satyasheel Sharma、Jihye Park、Mirim Kim、Yeonhee Choi、Yukyoung Jeon、Jong Hwan Kwak、In Su Kim
DOI:10.1016/j.tet.2013.06.008
日期:2013.8
A palladium-catalyzedoxidativeacylation of 2-phenoxypyridines with benzylic and aliphatic alcohols via C–H bondactivation is described. This protocol represents direct access to biologically active ortho-acylphenol derivatives, and provides new opportunities to use readily available alcohols as starting materials for catalytic acylation reactions.
aldehydes leading to aryl ketones by the use of palladium(II) acetate, tert-butyl hydroperoxide, and chlorobenzene as the catalyst, oxidant, and solvent, respectively, is presented. Intra- and intermolecular kinetic isotope effects, radical trapping, and controlled experiments were carried out to support the proposed catalytic mechanism for the reaction. Syntheses of (2-hydroxyphenyl)(phenyl)methanones and