A new method of synthesis of nitrosooxy- and nitro-substituted diferrocenyl-1,3-dienes and diferrocenyl(methylsulfanyl)-6H-1,2-oxazine N-oxides by reactions of diferrocenyl(methylsulfanyl)cyclopropenylium iodide with nitroalkanes in the presence of triethylamine at 20 °C is described. This reaction is accompanied by migration of a nitro group in the transient species or intramolecular cyclization. The structure of one of the 1,2-oxazine N-oxides has been confirmed by X-ray diffraction analysis.
diferrocenyl(methylsulfanyl)cyclopropenylium - 6H-1,2-oxazine N-oxides - cyclopropene ring opening - nitro-group migration - 2,3-diferrocenyl-1-nitrobuta-1,3-dienes