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Phenolyses of 1-bromoethylbenzene by phase-transfer catalysis in a heterogeneous two-phase system

✍ Scribed by Ho-Shing Wu; Monz-Chao Lu

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 683 KB
Volume: 104
Category: Article
ISSN: 1381-1169
DOI: 10.1016/1381-1169(95)00121-2

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✦ Synopsis

The reaction of phenol with 1-bromoethylbenzene by liquid-liquid phase-transfer catalysis in an organic solvent/alkaline solution was studied. The effects of solvents, catalysts, temperature, and basic concentration on reaction rate, and the yield of 0-arylation product were studied in order to find the optimum operating conditions for this reaction. The addition of phasetransfer catalyst significantly enhanced the reaction rate and the yield of 0-arylation product, and decreased the decomposition of 0-arylation product. The proper basic concentration could decrease the capability of solvation between catalyst and water, and increase the 0-arylated reactivity. In examining eight kinds of phase-transfer catalysts, benzyltributylammonium cation was found to be the best for increasing the reaction rate and the yield of 0-arylation product.

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