Suryanarayanan, V. and Noel, M. (1998) Selective electrofluorination of phenylacetonitrile and ct- (phenylthio) acetonitrile - the role of sulfur and other operating parameters. Journal of Fluorine Chemistry, 91 (02). pp. 153-157. ISSN 0022-1139

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Abstract

Cyclic voltammetric and constant current electrolysis were employed to study the electrochemical fluorination of PhCH2CN and PhSCH2CN in Et3N. 3HF/CH3CN using Pt electrodes. The presence of a sulfur atom near the methylene group in PhSCH2CN ensures the oxidative fluorination of this compound at much lower potential (around 1.75 V) when compared to PhCH2CN (2.0 V in solvent-flee Et3N. 3HF). Operating parameters such as drying the solvent, pre-electrolysis, polarity reversal, temperature, current density, and concentration of HF as well as Et3N in CHaCN medium show significant influence on the overall yield of more easily oxidisable PhSCH2CN when compared to PhCH2CN. Maximum yields of 23% in the case of PhCHFCN and 61% in the case of PhSCHFCN were achieved.

Item Type:	Article
Uncontrolled Keywords:	Selective electrofluorination; Phenylacetonitrile; a-(Phenylthio )acetonitrile
Subjects:	Electroorganic
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	04 May 2012 11:02
Last Modified:	04 May 2012 11:02
URI:	http://cecri.csircentral.net/id/eprint/1372

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