Kinetics and Mechanism of Monomolecular Heterolysis of Commercial Organohalogen Compounds: XLI. Solvent Effect on the Rate of 3-Methyl-3-chloro-1-butene Solvolysis. Correlation Analysis of Solvation Effects and Role of Solvent Nucleophilicity
作者:N. E. Ponomarev、V. V. Zaliznyi、G. F. Dvorko
DOI:10.1007/s11176-005-0441-5
日期:2005.9
The kinetics of 3-methyl-3-chloro-1-butene solvolysis at 25°C in MeOH, EtOH, BuOH, i -BuOH, PentOH, 2-PrOH, 2-BuOH, HexOH, OctOH, t -BuOH, t -PentOH, cyclohexanol, and allyl alcohol was studied by the verdazyl method; v = k [C5H9Cl], SN1 + E1 mechanism. The reaction rate shows a satisfactory correlation with the parameter of the solvent ionizing power E T and is independent of the solvent nucleophilicity
3-甲基-3-氯-1-丁烯的溶剂分解,在25℃于MeOH中,EtOH中,丁醇,动力学 我 -BuOH,PentOH,2-异丙醇,2-丁醇,乙基己醇,OctOH, 吨 -BuOH, 吨 -五苯酚,环己醇和烯丙醇通过凡达唑方法进行了研究; v = k [C 5 H 9 Cl],SN1 + E1机制。反应速率显示出与溶剂电离能力 E T 的参数令人满意的相关性, 并且与溶剂的亲核性无关。
Bentley, Stuart; Goosen, Andre; Laue, Hugh A. H., Journal of Chemical Research, Miniprint, 1991, p. 1566 - 1590
作者:Bentley, Stuart、Goosen, Andre、Laue, Hugh A. H.、Taljaard, Benjamin
DOI:——
日期:——
Kinetics and mechanism of monomolecular heterolysis of commercial organohalogen compounds: XLIII. Solvent effect on activation parameters of dehydrochlorination of 3-chloro-3-methylbut-1-ene. Correlation analysis of solvation effects
作者:N. E. Ponomarev、V. V. Zaliznyi、G. F. Dvorko
DOI:10.1134/s1070363207070110
日期:2007.7
The influence of temperature on the rate of dehydrochlorination of 3-chloro-3-methylbut-1-ene in 17 aprotic and 13 protic solvents, nu = k[C5H9Cl], was studied by the verdazyl method. In aprotic solvents, the electrophilicity, ionizing power, and cohesion of solvents decrease Delta G(not equal) by increasing Delta S-not equal. The nucleophilicity and polarizability increase both Delta H-not equal and Delta S-not equal to equal extent and therefore do not affect Delta G(not equal). In protic solvents, the solvent nucleophilicity increases Delta H-not equal to a greater extent than Delta S-not equal, and the overall effect of the nucleophilic solvation is small and negative.