Please use this identifier to cite or link to this item:
http://nopr.niscpr.res.in/handle/123456789/18327| Title: | Solvent effect on reactivity trends for base hydrolysis of 2-oxo-, 2-thio- benzopyran-3-thiocarboxamide, and 2-iminobenzopyran-3-carbonitrile |
| Authors: | El-Khatib, Rafat M. |
| Issue Date: | Aug-2002 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Kinetics of base-catalysed hydrolyses of 2-oxobenzopyron-3-carboxamide, 2-thiobenzopyron-3-carboxamide, and 2-iminobenzopyran-3-carbonitrile are studied in aqueous methanol mixture and the effect of solvent on change in the activation barrier (δmΔG≠) is measured. Solvent effects on reactivity trends for base hydrolysis of these compounds have been analysed into initial state and transition state components which are determined from transfer chemical potentials and kinetic data. It is observed that the substituents O, S or N in position two and thiocarboxamide or carbonitrile in position three affect the rate constant and change the activation barrier. |
| Page(s): | 1575-1579 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.41A(08) [August 2002] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 41A(8) 1575-1579.pdf | 962.19 kB | Adobe PDF | View/Open |
Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.