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Metal Catalyst‐Free Oxidative C−C Bond Cleavage of a Lignin Model Compound by H 2 O 2 in Formic acid
Author(s) -
Li Xiukai,
Zhang Yugen
Publication year - 2020
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.201903180
Subject(s) - formic acid , performic acid , catalysis , chemistry , bond cleavage , lignin , organic chemistry , yield (engineering) , ether , metal , materials science , metallurgy
Selective cleavage of the β‐O‐4 ether bond of lignin to produce aromatics is one of the most important topics for the sustainable production of chemicals from biomass. A simple system has been developed for C α −C β bond cleavage of a β‐O‐4 ketone‐structured lignin model compound (LMC) by H 2 O 2 in formic acid under metal catalyst‐free conditions. By using this simple system, with H 2 O 2 , formic acid, and mineral acid catalyst, over 90 % product yield is achieved in 6 h at room temperature. The reaction proceeds through the classic Baeyer–Villiger oxidation and in situ‐generated performic acid serves as the key oxidant. The cleavage of alcoholic LMCs by using the presented method in a two‐step process is also demonstrated.