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Mild and Robust Redox‐Neutral Pd/C‐Catalyzed Lignol β‐O‐4′ Bond Cleavage Through a Low‐Energy‐Barrier Pathway
Author(s) -
Galkin Maxim V.,
Dahlstrand Christian,
Samec Joseph S. M.
Publication year - 2015
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201500117
Subject(s) - hydrogenolysis , chemistry , catalysis , dehydrogenation , bond cleavage , photochemistry , redox , yield (engineering) , inorganic chemistry , organic chemistry , materials science , metallurgy
A Pd/C catalyzed redox neutral CO bond cleavage of 2‐aryloxy‐1‐arylethanols has been developed. The reactions are carried out at 80 °C, in air, using a green solvent system to yield the aryl ketones in near quantitative yields. Addition of catalytic amounts of a hydrogen source to the reaction mixture activates the catalyst to proceed through a low energy barrier pathway. Initial studies support a transfer hydrogenolysis reaction mechanism that proceeds through an initial dehydrogenation followed by an enol adsorption to Pd/C and a reductive CO bond cleavage.