Kinetic and Mechanistic Study of Oxidation of 3,5-Dimethyl-2,6-diarylpiperidin4-ones by Pyridinium Fluorochromate
| Main Authors: | (MRS ) KR. MEENAL, (MRS.) R. SELVAMEENA |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 1992
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/6031926 |
Daftar Isi:
- Department of Chemistry, Seethalakshmi Ramaswami College (Autonomous), Trichy-620 002 Manuscript received 27 January 1992, accepted 12 August 1992 Kinetics of oxidation of 3,5-dimethyl-2,6-diphenylpiperidin-4-one and its aryl substituted counterparts by pyridinium fluorochromate (PFC) in aquo-acetic acid-sulphuric acid medium, have been studied at four different temperatures. Activation parameters have been computed. The reaction rate is found to be acid-dependent in the concentration range 0.47-0.94 M. The rates of oxidations show first order kinetics each in [Piperidone], [PFC] and [H+]. The rates increase with an increase in the acetic acid composition, while remain almost unaffected with an increase in ionic strength of the medium. A tentative mechanism has been proposed and the rate law deduced.