Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0926-860X(00)00744-4
Title: Solid acid catalysts for the efficient synthesis of 2-(2,4-difluorophenyl) propane
Authors: Hu, X.
Chuah, G.K. 
Jaenicke, S. 
Issue Date: 28-Feb-2001
Citation: Hu, X., Chuah, G.K., Jaenicke, S. (2001-02-28). Solid acid catalysts for the efficient synthesis of 2-(2,4-difluorophenyl) propane. Applied Catalysis A: General 209 (1-2) : 117-123. ScholarBank@NUS Repository. https://doi.org/10.1016/S0926-860X(00)00744-4
Abstract: The Friedel-Crafts alkylation reaction is frequently used for C-C coupling, particularly in the pharmaceutical and fine chemical industries. The common Friedel-Crafts catalysts, namely sulfuric acid, hydrofluoric acid, or aluminum trichloride, pose considerable environmental problems. Particularly AlCl3, which generally has to be used in stoichiometric rather than catalytic quantities, leads to large volumes of waste. A more environmentally beneficial process has therefore to be developed. AlCl3 or ZnCl2 immobilized on clay or silica have been described as convenient heterogeneous catalysts for Friedel-Crafts alkylation. We show that AlCl3 immobilized on mesoporous silica gel constitutes a good catalyst for the propylation of 1,3-difluorobenzene. The reaction can be particularly well controlled if it is conducted in a continuous packed bed reactor.
Source Title: Applied Catalysis A: General
URI: http://scholarbank.nus.edu.sg/handle/10635/94829
ISSN: 0926860X
DOI: 10.1016/S0926-860X(00)00744-4
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