title: Generation and synthetic uses of stable 4-[2-isopropylidene]-phenol carbocation from bisphenol A.
abstract: [reaction: see text] 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.
authors.affiliation: Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan, ROC.
authors.forename: Wei-Fu
authors.initials: WF
authors.lastname: Chen
authors.forename: Hsing-Yo
authors.initials: HY
authors.lastname: Lin
authors.forename: Shenghong A
authors.initials: SA
authors.lastname: Dai