- Selective Indirect Oxidation of Phenol to Hydroquinone and Catechol
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The introduction of a hydroxyl function into phenol to give hydroquinone and catechol can be achieved in high yields by the reaction of hydrogen peroxide with alkenylphenols.These alkenylphenols are obtained by thermolysis of bisphenol A, alkylation of phenol with cyclopentadiene followed by isomerization, and alkylation of phenol with mesityl oxide followed by thermolysis to give 4-isopropenylphenol, 2- and 4-(cyclopenten-1-yl)phenol, and 2,2,4-trimethyl-1,2-chromene, respectively.
- Dai, S. H.,Lin, C. Y.,Rao, D. V.,Stuber, F. A.,Carleton, P. S.,Ulrich, Henri
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p. 1722 - 1725
(2007/10/02)
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- Indene compound and novel process for producing indene compounds
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Indene compounds of the formula STR1 wherein X represents a hydrogen atom, a halogen atom, a hydroxyl group or a methyl group, and y is 0 or an integer of 1 to 3, are produced by either heat-decomposing indene compounds of the formula STR2 wherein X and y are as defined, in the presence of an acid or alkaline catalyst; or heat-decomposing isopropenyl phenols of the formula STR3 wherein X and y are as defined, or oligomers or polymers thereof in the presence of an acid catalyst. 5-Hydroxy-1,1,3-trimethyl-2-indene corresponding to formula (III) is a novel compound.
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