Journal of the American Chemical Society

Permanganate ion oxidations. 17. Kinetics and mechanism of the oxidation of (E)-3-(2-thienyl)-2-propenoates and (E)-3-(3-thienyl)-2-propenoates in phosphate- …

F Freeman, LY Chang

Index: Freeman, Fillmore; Chang, Lilian Y. Journal of the American Chemical Society, 1986 , vol. 108, # 15 p. 4504 - 4509

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Citation Number: 17

Abstract

Abstract: The kinetics and mechanism of the permanganate ion oxidation of (E)-3-(2-thienyl)- 2-propenoates and (E)-343-thienyl)-2-propenoates have been studied at 418, 526, 584, and 660 nm in phosphate-buffered solutions (pH 6.83 i 0.03). The reaction is first order in permanganate ion and first order in substrate. A rate-determining step leading to the formation of a metallacyclooxetane or a cyclic manganate (V) diester is supported by low ...