The use of chemical probes for the characterization of chemical properties was explored for completely non-aqueous aprotic binary solvent mixtures. The Dimroth-Reichardt E T (30) betaine dye, 4-nitrophenol, 4nitroanisole, 4-nitroaniline and N,N-diethyl-4-nitroaniline were used to study preferential
Base Catalysis of Aromatic Nucleophilic Substitution Reactions in Aprotic and Dipolar Aprotic Solvents
β Scribed by Titus O. Bankole; Jack Hirst; Ikenna Onyido
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 2010
- Weight
- 32 KB
- Volume
- 91
- Category
- Article
- ISSN
- 0037-9646
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Equilibria and kinetics of proton-transfer reactions in toluene between a set of m-and o-substituted (methyl, methoxy, chloro, nitro and hydroxy) benzoic acids and the carbinol base (colourless) of Crystal Violet were studied spectrophotometrically. The data on equilibrium and kinetic parameters wer
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Empirical solvent polarity parameters E T (30) were determined by UV/VIS spectroscopy, using Dimroth-Reichardt's betaine dye, as a function of composition, for several binary solvent mixtures [i.e. polar hydrogen bond acceptor (PHBA) solvents + chloroform or dichloromethane]. Each solvent system was