1985-97-3Relevant articles and documents
Alkylation of alkyl aromatic hydrocarbons over metal oxide-alkali metal superbasic catalysts
Kijenski,Radomski,Fedorynska
, p. 407 - 425 (2007/10/03)
The alkylation of toluene, ethylbenzene, cumene, and o-, m-, and p-xylenes with ethylene, propylene, and 1,2-diphenylethylene was studied over superbasic MgO-K and γ-Al2O3-K catalysts and over model systems of the electron donor acceptor complex type. The ethylation and propylation of alkylbenzenes indicated that the donor power and the concentration of the one-electron donor centers were not the only factors, which determined the activity (depicted by the initial reaction rate, turnover number, or alkylbenzene conversion) and selectivity of the catalytic system. In the series of reactions, a higher total conversion of alkyl aromatic hydrocarbons to their ethylation or propylation products was achieved over γ-Al2O3-K systems. The reaction chemoselectivity (mono- or difunctionalization of alkylbenzenes) depended on the nature of the alkyl aromatic reactant and alkylating alkene, on the reaction temperature, and on the used catalyst.
Chemoselektive und positionsspezifische Methylierung von tert-Alkylhalogeniden mit Methyltitan(IV)-chloriden
Reetz, Manfred T.,Westermann, Juergen,Steinbach, Rainer
, p. 933 - 934 (2007/10/02)
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