The rates of reaction of catechol with several acyl halides were determined in 95% acetone. The results indicate that the reaction proceeds by a concerted attack of the monocatecholate ion on the acyl halide with the formation of the monoacyl ester of catechol. Benzenesulfonyl fluoride and benzoic anhydride appear to react with catechol by a similar concerted mechanism. Resorcinol, hydroquinone and phenol are, relative to catechol, unreactive toward acyl halides.
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