Abstract
The reaction of benzoyl chloride and sodium carboxylate using pyridine 1-oxide (PNO) as an inverse phase-transfer catalyst in a system of the two phases H 2O and CH 2Cl 2 was investigated. Carboxylate ions including formate, acetate, propionate, 2-methylpropanoate, pentanoate, hexanoate, heptanoate and octanoate were selected to compare their reactivities. The rate of reaction depended on the concentration of pyridine 1-oxide (PNO) in the organic phase. The concentration of carboxylate ion affected the distribution of pyridine 1-oxide (PNO) between the organic and aqueous phases. The rate of reaction thus depended on the concentration of the carboxylate ion even though the rate-determining step occurred in the organic phase.
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