Reaction of alpha,beta-unsaturated aromatic carboxylic acids with KBr and H2O2 in the presence of Na2MoO4.2H2O in aqueous medium affords beta-bromo alkenes in high yield.
A dicopper(II) complex [Cu) has been found to be catalytically active in the oxidation of ascorbic acid by dioxygen involving a copper(I) intermediate species and the process is also effective in the presence of benzylamine to form benzaldehyde.
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