TEMPO-modified graphite felt electrodes: attempted enantioselective oxidation of rac-1-phenylethanol in the presence of (–)-sparteine
Abstract
At a TEMPO-modified graphite felt electrode (TMGFE) rac-1-phenylethanol 2 is not enantioselectively oxidised in the presence of (–)-sparteine 1, but instead 1 is dehydrogenated to its iminium salt; 2 is oxidised in solution by the oxoammonium salt 6 in the absence of 1, but not on the TMGFE in the range 0–1.0 V vs. Ag/AgNO3.