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Reactivity of Acetates in Aqueous Alcohols

Bernard Denegri ; Faculty of Pharmacy and Biochemistry, University of Zagreb, Ante Kovačića 1, 10000 Zagreb, Croatia
Olga Kronja ; Faculty of Pharmacy and Biochemistry, University of Zagreb, Ante Kovačića 1, 10000 Zagreb, Croatia

Puni tekst: engleski, pdf (2 MB) str. 223-226 preuzimanja: 682* citiraj
APA 6th Edition
Denegri, B. i Kronja, O. (2010). Reactivity of Acetates in Aqueous Alcohols. Croatica Chemica Acta, 83 (2), 223-226. Preuzeto s https://hrcak.srce.hr/56026
MLA 8th Edition
Denegri, Bernard i Olga Kronja. "Reactivity of Acetates in Aqueous Alcohols." Croatica Chemica Acta, vol. 83, br. 2, 2010, str. 223-226. https://hrcak.srce.hr/56026. Citirano 27.02.2020.
Chicago 17th Edition
Denegri, Bernard i Olga Kronja. "Reactivity of Acetates in Aqueous Alcohols." Croatica Chemica Acta 83, br. 2 (2010): 223-226. https://hrcak.srce.hr/56026
Harvard
Denegri, B., i Kronja, O. (2010). 'Reactivity of Acetates in Aqueous Alcohols', Croatica Chemica Acta, 83(2), str. 223-226. Preuzeto s: https://hrcak.srce.hr/56026 (Datum pristupa: 27.02.2020.)
Vancouver
Denegri B, Kronja O. Reactivity of Acetates in Aqueous Alcohols. Croatica Chemica Acta [Internet]. 2010 [pristupljeno 27.02.2020.];83(2):223-226. Dostupno na: https://hrcak.srce.hr/56026
IEEE
B. Denegri i O. Kronja, "Reactivity of Acetates in Aqueous Alcohols", Croatica Chemica Acta, vol.83, br. 2, str. 223-226, 2010. [Online]. Dostupno na: https://hrcak.srce.hr/56026. [Citirano: 27.02.2020.]

Sažetak
A series of X,Y-substituted benzhydryl acetates (1-3) were subjected to solvolysis in various binary methanol/water and ethanol/water mixtures at 25 °C. The LFER equation log k = sf(Ef + Nf) was used
to derive the nucleofuge-specific parameters (Nf and sf) for an SN1 type reaction in 60 % and 80 % aqueous methanol. It has been established that X,Y-substituted benzhydryl acetates produce almost parallel correlation lines, so the average sf = 0.9 has been taken for calculation of the nucleofugality parameters
from a single rate constant in some solvent mixtures. In comparison with other leaving groups for which
the nucleofugality has already been determined, acetates are the poorest nucleofuges.

Ključne riječi
acetate; nucleofugality; electrofugality; solvolysis; nucleophilic substitution

Hrčak ID: 56026

URI
https://hrcak.srce.hr/56026

Posjeta: 948 *