ACTIVATION OF RHODIUM(III) IN REACTIONS WITH HETEROCYCLIC AZO COMPOUNDS USING ACETATE-ALCOHOL MEDIA

Abstract

Due to the kinetic inertness of rhodium(III) ions,
we substantiate the necessity to activate rhodium in the color
reaction, particularly, in processes involving heterocyclic azo
compounds. Some compounds are known to be very labile. A
brief review of labilization means of rhodium(III) is presented.
It is shown that mild carbonylhalogenation of rhodium(III)
in acetate ion - metal - alcohol - reagent systems is very
promising under thermal or microwave exposure. In this case,
the system produces the corresponding acetate, transforming
rhodium(III) in the carbonyl chloride of lower degrees of
oxidation.