NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.46A [2007] >
IJC-A Vol.46A(02) [February 2007] >


Title: Catalysis by onium salts on the monochromate oxidation of benzhydrols in non-polar media — A kinetic study
Authors: Basheer, K Muhammad
Joseph, Joy
Nair, T D Radhakrishnan
Issue Date: Feb-2007
Publisher: CSIR
IPC CodeInt. Cl.⁸ C07B33/00
Abstract: Kinetic studies on the oxidation of benzhydrols with phase transferred monochromate in non-polar media have been carried out using tricaprylmethylammonium chloride, tetrabutyl-ammonium bromide and tetrabutylphosphonium bromide as phase transfer catalysts (PTC). The oxidation has been found to be selective with quantitative formation of benzophenone. The reaction is first order in the [oxidant] as well as the [substrate]. The specific rates and activation parameters have been evaluated. The oxidation takes place at fairly low activation energy with all the catalysts employed. Rates of oxidation decrease with increase in the dielectric constant of the non-polar media. A mechanism involving formation of a Huckel type transition state in the rate determining step is quite probable.
Page(s): 273-275
ISSN: 0376-4710
Source:IJC-A Vol.46A(02) [February 2007]

Files in This Item:

File Description SizeFormat
IJCA 46A(2) (2007) 273-275.pdf68.83 kBAdobe PDFView/Open
 Current Page Visits: 611 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 570073 since 06-Feb-2009  Last updated on 14-Aug-2014Webmaster: nopr@niscair.res.in