Acylation of alcohols and activated aromatic compounds on silica embedded-triflate catalysts

Parvulescu, AN;Gagea, BC;Poncelet, Georges;Parvulescu, VI
(2006) Applied Catalysis A: General — Vol. 301, n° 1, p. 133-137 (2006)

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  • Parvulescu, AN
    Author
  • Gagea, BC
    Author
  • Poncelet, GeorgesUCLouvain
    Author
  • Parvulescu, VI
    Author
Abstract
A series of triflate derivatives (La(OTf)(3), tert-butyl-dimethyl-silyltrifluoromethane-sulfonate (BDMST) and triflic acid (HOTf)) embedded in a silica matrix were Used as heterogeneous catalysts for the acylation of alcohols and activated aromatic Compounds. Acylation of saturated alcohols and cyclohexanol resulted in O-acylated products. The acylation of the aromatic compounds was dependent on temperature and substituents. At low temperatures, for phenols and naphtols, acylation occurred mainly to O-acylated. Under these conditions, the presence of catalysts only enhanced the reaction rate. The increase of the temperature above 150 degrees C also led to C-acylation. For anisole and 1-methoxynaphtalene, acylation occurred at the aromatic ring even at low temperatures. (c) 2005 Elsevier B.V. All rights reserved.
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Parvulescu, A., Gagea, B., Poncelet, G., & Parvulescu, V. (2006). Acylation of alcohols and activated aromatic compounds on silica embedded-triflate catalysts. Applied Catalysis A: General, 301(1), 133-137. https://doi.org/10.1016/j.apcata.2005.10.025 (Original work published 2006)