Solvent nucleophilicities of hexafluoroisopropanol/water mixtures

被引：39

作者：

Ammer, Johannes ^{[1
]}

Mayr, Herbert ^{[1
]}

机构：

[1] Univ Munich, Dept Chem, D-81377 Munich, Germany

来源：

JOURNAL OF PHYSICAL ORGANIC CHEMISTRY | 2013年 / 26卷 / 01期

关键词：

PHOTOLYTIC GENERATION; FLUORINATED ALCOHOLS; CARBOCATIONS; GEPASI;

D O I：

10.1002/poc.3064

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

First-order rate constants k1 for the trapping of various donor- and acceptor-substituted benzhydrylium ions in mixtures of 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) and water ranging from 50 to 99% HFIP (w/w) were determined by laser flash photolytic generation of benzhydrylium ions from benzhydryl triarylphosphonium salts in these solvents. From these rate constants, we derived the solvent-specific reactivity parameters N1 and sN for HFIP/water mixtures as defined by the linear free energy relationship lg k1(20 degrees C)?=?sN(N1?+?E). Copyright (C) 2012 John Wiley & Sons, Ltd.

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页码：59 / 63

页数：5

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