Present work contains kinetic data of oxidation of sodium
diethyldithiocarbamate in presence of phthalocyanine catalysts. It is shown
that nature of peripheral substituent has a great influence on
self-association of phthalocyanines and on its catalytic activity. Oxidation
mechanism of sodium diethyldithiocarbamate involving formation of triple
complex of substrate, reduced form of catalyst and oxygen is offered. It is
also shown that oxidation mechanism of dithiocarbamic acids is different than
for cysteine.
Difunctional and symmetric phthalonitriles were synthesized by nucleophilic substitution of brome and nitro-group in 4-bromo-5-nitro-phthalonitrile for residues 4-amino-, 4-hydroxyl- and 4-sulfanyl benzoic acid. Symmetrical and difunctional substituted cobalt phthalocyanines were obtained by template synthesis based on mentioned phthalonitriles. Their spectral properties and catalytic activity in aerobic oxidation of sodium [Formula: see text],[Formula: see text]-carbomoditiolate were investigated.
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