Oxidation of some Disubstituted Diphenyl Sulphoxides with Sodium N-Bromobenzene Sulphonamide in Presence of Mercury(II). A Kinetic and Mechanistic Study
| Main Authors: | G. MANGALAM, SUBBIAH MEBNAKSHI SUNDARAM |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 1992
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/6031800 |
Daftar Isi:
- Department of Technology, Annamalai University, Annamalainagar-608 002 Manuscript received 19 May 1992, revised 24 August 1992, accepted 25 August 1992 Kinetics of bromamine-B (BAB) oxidation of some p- and p'-disubstituted sulphoxides, to give the corresponding sulphones, have been studied in aqueous acetic acid medium. A first order dependence on the concentration of each reactant was observed. Rate data showed an inverse dependence on [benzene sulphonamide] and a fractional order in H+. The reactions are little affected by the addition of HgII, ruling out the catalytic role. A negative p value suggests the sulphur becoming e'ectron-deficient in the transition state. The rate-limiting step involves the interaction of the substrate and [H20Br+] species.