Efficient microwave-assisted direct C -benzoylation of phenols and naphthols with benzoic acid catalyzed by bismuth triflate under solvent-free or ionic liquid conditions

Dimethylglyoxime (DMG) and N-hydroxyphthalimide (NHPI) were used to catalyze oxidation of toluene to benzoic acid with molecular oxygen under normal pressure in PEG 1000 -based functional dicationic acidic ionic liquid (PEG1000 -DAIL). PEG1000 –DAIL enhanced the efficient catalytic ability of NHPI: 89.82% conversion of toluene with 94.63% selectivity for benzoic acid could be obtained at 80°C in 10 h.

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ChemInform Abstract: Acidic Task-Specific Ionic Liquid as Catalyst of Microwave-Assisted Solvent-Free Biginelli Reaction.

ChemInform ◽

10.1002/chin.200803156 ◽

2008 ◽

Vol 39 (3) ◽

Author(s):

A. Arfan ◽

L. Paquin ◽

J. P. Bazureau

Keyword(s):

Ionic Liquid ◽

Biginelli Reaction ◽

Solvent Free ◽

Microwave Assisted ◽

Task Specific Ionic Liquid

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Oxidation of Toluene to Benzoic Acid Catalyzed by Platinum Supported on Zirconia in the Liquid Phase-Solvent Free Conditions

Catalysis Letters ◽

10.1007/s10562-008-9750-8 ◽

2008 ◽

Vol 128 (3-4) ◽

pp. 337-342 ◽

Cited By ~ 19

Author(s):

Mohammad Ilyas ◽

Mohammad Sadiq

Keyword(s):

Liquid Phase ◽

Benzoic Acid ◽

Solvent Free ◽

Solvent Free Conditions ◽

Acid Catalyzed

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Efficient p-Amino Benzoic Acid Catalyzed Eco-friendly Synthesis of 1,5-benzodiazepines among Various Amino Acids under Solvent Free Conditions

Current Research in Chemistry ◽

10.3923/crc.2012.68.75 ◽

2012 ◽

Vol 4 (3) ◽

pp. 68-75 ◽

Cited By ~ 4

Author(s):

Akshdeep Sandhar ◽

Deo Nandan Pra ◽

Abhinav Kapoor ◽

Rajesh K. Singh

Keyword(s):

Amino Acids ◽

Benzoic Acid ◽

Solvent Free ◽

Solvent Free Conditions ◽

Acid Catalyzed ◽

Amino Benzoic Acid

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Microwave-assisted direct transformation of lignocellulose into methyl glycopyranoside in ionic liquid

Holzforschung ◽

10.1515/hf-2019-0069 ◽

2020 ◽

Vol 74 (3) ◽

pp. 313-320 ◽

Cited By ~ 2

Author(s):

Takao Kishimoto ◽

Mafuyu Saito ◽

Satoshi Suzuki ◽

Masahiro Hamada ◽

Noriyuki Nakajima ◽

...

Keyword(s):

Ionic Liquid ◽

Microwave Irradiation ◽

Microcrystalline Cellulose ◽

Value Added ◽

Reaction Conditions ◽

Direct Transformation ◽

Moderate Reaction ◽

Microwave Assisted ◽

Combined Use ◽

Acid Catalyzed

AbstractRecently, conversion of lignocellulose into useful substances has attracted increasing attention. In our previous investigations, microcrystalline cellulose was successfully converted to methyl glucopyranosides (MeGlc) by the combined use of ionic liquid (IL) and microwave irradiation under moderate reaction conditions. In this study, lignocelluloses, including softwood, hardwood, and rice straw, were directly converted to methyl glycopyranosides (MG), including MeGlc, methyl mannopyranosides (MeMan), and methyl xylopyranosides (MeXyl) using acid-catalyzed methanolysis under microwave irradiation in ILs. Lignocellulose ball-milling was quite effective as a crucial process of increasing the yield of MG. Under the optimized reaction conditions, the molar yield of MeGlc reached 40% from softwood, which was a comparable yield from microcrystalline cellulose. MeXyl was also obtained in a 48% yield. These results showed that the combination of the dissolution of ball-milled lignocellulose in IL and the microwave-assisted methanolysis was an effective method of converting lignocellulose into a high-value-added substance.

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