ELECTROCHEMICAL REDUCTION OF SUBSTITUTED ALPHA,ALPHA,ALPHA-TRIFLUOROACETOPHENONES - LINEAR RELATIONSHIP BETWEEN CYCLIC VOLTAMMETRIC PEAK POTENTIALS AND HAMMETT SUBSTITUENT CONSTANTS
Journal
Journal of Physical Organic Chemistry
Journal Volume
3
Journal Issue
11
Pages
723-731
Date Issued
1990
Author(s)
Abstract
AbstractThe peak potentials of substituted �\,�\,�\?trifluoroacetophenones were measured in acetonitrile with 0�P1 M tetrabutylammonium perchlorate. The cyclic voltammograms indicated an irreversible electrochemical process for the first wave (Epc1) and a partially reversible one for the second wave (Epc2) when the scan rate was slower than 100 mV s? 1. Excellent linear correlations were observed for Epc1 with �m constants (�l = 0�P526, r = 0�P999) and for Epc2 with �m? constants (�l = 0�P605, r = 0�P998), respectively. Therefore, unknown �m values such as ?0�P36 for 3, 4?ethyleneoxy can be estimated from these correlations. The mechanism of the electrode process probably involves a single electron transfer and the formation of a pinacol.
SDGs
Type
journal article