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Effects of mixed CH3CN(SINGLEBOND)H2O solvents on rate of intramolecular general base-catalyzed cleavage of ionized phenyl salicylate in the presence of 3-aminopropan-1-ol, 1,2-diaminoethane, and glycine

✍ Scribed by M. Niyaz Khan

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
137 KB
Volume
30
Category
Article
ISSN
0538-8066

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✦ Synopsis

The effects of mixed CH 3 CN 9 H 2 O solvents on rates of aminolysis of ionized phenyl salicylate, PS Ϫ , reveal a nonlinear decrease in the nucleophilic second-order rate constants, (for aminolysis) with increase in the content of CH 3 CN until it becomes Ϸ 50%, ms k , n v/v. The values of remain almost unchanged with change in the CH 3 CN content within 50 ms k n to 70 or 80%, v/v. The effects of mixed CH 3 CN 9H 2 O solvents on of leaving group, phenol, pK a and protonated amine nucleophile have been concluded to be the major source for the observed mixed solvent effects on

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