Nv. Smirnova et al., Strategy for controlling the Kolbe electrosynthesis in the presence of aromatic fragments and amino groups in the molecule, RUSS J ELEC, 37(9), 2001, pp. 893-898
A general characteristic of processes that occur during anodic oxidation of
phenylacetic and phenylpropionic acids and derivatives of alpha- and beta
-amino acids on platinum electrodes in methanol and mixed pyridine-methanol
solutions is given. From preparative electrolyses in stagnant and flow-thr
ough reactors, conditions are determined under which the dimerization (Kolb
e electrosynthesis) is least complicated by the formation of polymer produc
ts. Properties of removed electrodes, on which stable polymer films formed
during the electrosynthesis, are examined. For films formed in certain cond
itions on the cathode, the presence of a quasireversible redox transition i
s demonstrated. Such films contain disperse platinum codeposited with polym
er as a result of the anode dissolution in the cells with common compartmen
ts. In principle, the film-modified electrodes can be used for controlling
anodic decarboxylation.