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Int. J. Mol. Sci. 2009, 10(3), 929-941; doi:10.3390/ijms10030929
Article

Corrrelation of the Specific Rates of Solvolysis of Ethyl Fluoroformate Using the Extended Grunwald-Winstein Equation

1, 1,* , 2
 and 3,*
Received: 15 February 2009; in revised form: 27 February 2009 / Published: 2 March 2009
(This article belongs to the Special Issue Grunwald-Winstein Equations – 60 Years & Counting)
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Abstract: The specific rates of solvolysis of ethyl fluoroformate have been measured at 24.2 °C in 21 pure and binary solvents. These give a satisfactory correlation over the full range of solvents when the extended Grunwald-Winstein equation is applied. The sensitivities to changes in the NT solvent nucleophilicity scale and the YCl solvent ionizing power scale, and the kF/kCl values are very similar to those for solvolyses of n-octyl fluoroformate, consistent with the addition step of an addition-elimination pathway being rate-determining. For methanolysis, a solvent deuterium isotope effect of 3.10 is compatible with the incorporation of general-base catalysis into the substitution process. For five representative solvents, studies were made at several temperatures and activation parameters determined. The results are also compared with those reported earlier for ethyl chloroformate and mechanistic conclusions are drawn.
Keywords: Ethyl fluoroformate; addition–elimination; Grunwald–Winstein equation; solvent isotope effect Ethyl fluoroformate; addition–elimination; Grunwald–Winstein equation; solvent isotope effect
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Seong, M.H.; Kyong, J.B.; Lee, Y.H.; Kevill, D.N. Corrrelation of the Specific Rates of Solvolysis of Ethyl Fluoroformate Using the Extended Grunwald-Winstein Equation. Int. J. Mol. Sci. 2009, 10, 929-941.

AMA Style

Seong MH, Kyong JB, Lee YH, Kevill DN. Corrrelation of the Specific Rates of Solvolysis of Ethyl Fluoroformate Using the Extended Grunwald-Winstein Equation. International Journal of Molecular Sciences. 2009; 10(3):929-941.

Chicago/Turabian Style

Seong, Mi Hye; Kyong, Jin Burm; Lee, Young Hoon; Kevill, Dennis N. 2009. "Corrrelation of the Specific Rates of Solvolysis of Ethyl Fluoroformate Using the Extended Grunwald-Winstein Equation." Int. J. Mol. Sci. 10, no. 3: 929-941.


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