Benzoylation of 1,2-dimethoxybenzene with benzoic anhydride and substituted benzoyl chlorides over large pore zeolites
Metadata of CSIR Papers
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| Title |
Benzoylation of 1,2-dimethoxybenzene with benzoic anhydride and substituted benzoyl chlorides over large pore zeolites
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| Creator |
Raja, T
Singh, AP Ramaswamy, AV Finiels, A Moreau, P |
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| Subject |
Chemistry, Physical; Environmental Sciences
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| Description |
The benzoylation of 1,2-dimethoxybenzene (veratrole) with benzoic anhydride and substituted benzoyl chlorides has been investigated in the liquid phase (chlorobenzene as solvent) over the H-forms of various zeolites. H-Y and H-BEA have been shown to be efficient catalysts in such a reaction, and led to the selective formation of the corresponding dimethoxybenzophenones. The effect of various experimental parameters on the initial rate of the reaction of veratrole with benzoic anhydride over H-Y zeolite has been studied, leading to propose a suitable mechanism based on the difference of adsorptions of the aromatic substrate and the acylating agent. Moreover, the study of the reaction of veratrole with a series of substituted benzoyl chlorides (4-CH3, 4-OCH3, 4-tert-butyl, 4-Cl, 2-Cl and 2-Br benzoyl chlorides, respectively) over the same H-Y zeolite led to conclude that, due to the high reactivity of the aromatic substrate, the electrophilicity of the acylating agent does not play a relevant role under the given heterogeneous conditions. (C) 2001 Elsevier Science B.V. All rights reserved.
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| Publisher |
ELSEVIER SCIENCE BVAMSTERDAMPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
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| Date |
2011-09-24T09:05:41Z
2011-09-24T09:05:41Z 2001 |
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| Type |
Article
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| Identifier |
APPLIED CATALYSIS A-GENERAL
0926-860X http://hdl.handle.net/123456789/24115 |
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| Language |
English
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