Mechanistic studies on the VO(acac)2-catalyzed oxidative cleavage of lignin model compounds in acetic acid

RSC Advances ◽  
2016 ◽  
Vol 6 (111) ◽  
pp. 110229-110234 ◽  
Author(s):  
Yangyang Ma ◽  
Zhongtian Du ◽  
Fei Xia ◽  
Jiping Ma ◽  
Jin Gao ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Reaction Pathway ◽  
Aerobic Oxidation ◽  
Oxidative Cleavage ◽  
Mechanistic Studies ◽  
Model Compounds ◽  
Lignin Model Compounds ◽  
Lignin Model ◽  
Selective Aerobic Oxidation ◽  
Catalyzed Oxidation

Selective aerobic oxidation has provided a promising approach for breaking lignin into smaller aromatics. Here, the reaction pathway of VO(acac)2-catalyzed oxidation of lignin model 2-phenoxy-1-phenylethanol in acetic acid was studied.

Ionic liquid [OMIm][OAc] directly inducing oxidation cleavage of the β-O-4 bond of lignin model compounds

2017 ◽  
Vol 53 (63) ◽  
pp. 8850-8853 ◽  
Author(s):  
Yingying Yang ◽  
Honglei Fan ◽  
Qinglei Meng ◽  
Zhaofu Zhang ◽  
Guanying Yang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Aromatic Compounds ◽  
Aerobic Oxidation ◽  
Model Compounds ◽  
Lignin Model Compounds ◽  
Metal Free ◽  
Lignin Model

Ionic liquids can effectively induce the transformation of lignin model compounds into aromatic compounds by aerobic oxidation under metal-free conditions.

Iron porphyrin catalyzed oxidation of lignin model compounds: oxidation of phenylpropane and phenylpropene model compounds

1995 ◽  
Vol 73 (12) ◽  
pp. 2153-2157 ◽  
Author(s):  
Futong Cui ◽  
David Dolphin
Keyword(s):  
Iron Chloride ◽  
Ring Cleavage ◽  
Iron Porphyrin ◽  
Model Compounds ◽  
Lignin Model Compounds ◽  
Aqueous Acetonitrile ◽  
Tert Butylhydroperoxide ◽  
Lignin Model ◽  
Aromatic Ring Cleavage ◽  
Catalyzed Oxidation

The oxidation of 1-(4-ethoxy-3-methoxyphenyl)propane (2) and 1-(4-ethoxy-3-methoxyphenyl)propene (3) by meso-tetra(2,6-dichloro-3-sulphonatophenyl)porphyrin iron chloride (TDCSPPFeCl, 1) and tert-butylhydroperoxide (t-BuOOH) are discussed. In addition to a Cα-hydroxylation product, demethoxylation and direct aromatic ring cleavage products were found in the oxidation of 2. When 3 was oxidized by 1 and t-BuOOH in aqueous acetonitrile, an acetonitrile-incorporated product was found. A mechanism for the oxidation of 3 is proposed. Keywords: lignin, ligninase, iron porphyrin, model, degradation.

Phenolic mediators enhance the manganese peroxidase catalyzed oxidation of recalcitrant lignin model compounds and synthetic lignin

2014 ◽  
Vol 72 ◽  
pp. 137-149 ◽  
Author(s):  
Paula Nousiainen ◽  
Jussi Kontro ◽  
Helmiina Manner ◽  
Annele Hatakka ◽  
Jussi Sipilä
Keyword(s):  
Manganese Peroxidase ◽  
Model Compounds ◽  
Lignin Model Compounds ◽  
Lignin Model ◽  
Catalyzed Oxidation
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