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The effect of ionic liquids on the oxidation of 2,3,6-trimethylphenol to 2,3,5-trimethyl-1,4-benzoquinone under atmospheric oxygen was studied. The results showed that the selectivity and conversion were significantly influenced by the anions of ionic liquids. The best selectivity of 96.1% and conversion of 100% were achieved with 10mol% copper(II) chloride as catalyst and [Bmim]BF 4 as co-catalyst...
The imidazolium ionic liquids were used as solvents for the oxidation of 2,3,6-trimethylphenol (TMP) to trimethyl-1,4-benzoquinone (TMBQ), eliminating the need for volatile and flammable organic solvents. Compared with those in traditional organic solvents, the conversion and selectivity obtained in 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF 4 ) were significantly increased. It...
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