CERIUM (IV) MEDIATED OXIDATIVE DIMERIZATION OF 3-OXOACID ANILIDES AND THEIR CYCLIZATIONS

Investigation of the behavior of several anilides of 3- oxoacids in oxidation reaction with ceric ammonium nitrate has shown that selective intermolecular C-C bond formation, which led to their dimers, is typical of these compounds. These dimeric species were cyclized in two routes, A and B, leading to 3-[2′-(1′-aniline-3′-oxo)-indene]-quinoline-2-on derivatives with HCl(g) (Route A), and with application of H2SO4 as a cyclization agent, gave furane-3,4-dicarboxylic acid derivatives (Route B).