Synthesis and Properties of Cadmium-containing Quinolinium and Pyrilium Salts

Consecutive treatment of methyl-substituted quinolinium and 2,6-diarylpyrilium perchlorates with sodium ethylate and equimolar amount of anhydrous cadmium(II) trifluoroacetate gives 2- and 4-methylenecadmium-containing salts of the above heterocyclic cations in 80-97% yields. The reactions of the cadmium-containing quinolinium and pyrilium salts with hydrochloric acid, acetic anhydride, mercuric trifluoroacetate, SnCl2, and nickel(II) trifluoroacetate, resulting in substitution of the CdOCOCF3 group by hydrogen, Ac, HgOCOCF3, SnCl, and NiOCOCF3, respectively, were studied.