- Generation and synthetic uses of stable 4-[2-isopropylidene]-phenol carbocation from bisphenol A
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(Equation Presented) Stable 4-[2-isopropylidene]-phenol carbocation, IPP cation 1, was generated readily by addition of bisphenol A in concentrated sulfuric acid at ambient temperature, and the cation could be used for facile syntheses of 4-isopropenyl phenol (IPP), IPP dimers, and spiro-bisphenol derivatives.
- Chen, Wei-Fu,Lin, Hsing-Yo,Dai, Shenghong A.
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p. 2341 - 2343
(2007/10/03)
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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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