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NUCLEOFUGALITIES OF ACETATE IN 80% AND 90% AQUEOUS ETHANOL

Nucleofugalites of X, Y-benzhydryl acetates in 80% and 90% aqueous ethanol have been derived from the SN1 solvolysis rate constants (k) by applying the LFER equation log k (25°C) = sf (Ef + Nf), in which: k is the first-order rate constant for SN1 reaction, sf (slope of the log k/Ef correlation line) and Nf (nucleofugality ; negative intercept on the abscissa) are nucleofuge specific parameters, and Ef is the electofugality parameter. According to LFER equation Nf parameters can be calculated and employed for comparing heterolytic reactivities of different types of leaving groups in a wide range of reactivity. Furthermore, combining previously determined parameters, the duration of a particular solvolytic reaction can be estimated which could be useful in various fields of organic chemistry.

Nucleofugality ; benzhydryl acetates ; solvolysis

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