Study of some nitrogen compounds of 2,2′-dithienyl

5-Formyl-5-nitro-2,2-dithienyl and 5-formyl-3-nitro-2,2t'-dithienyl were obtained by nitration of 5-formyl-2,2t'-dithienyl with copper nitrate in acetic anhydride. The structures of the nitroaldehydes were established by their oxidation to the corresponding nitro acids of the 2,2-dithienyl series, the decarboxylation of which yielded 5-nitro- and 3-nitr o-2,2 -dithienyls.See 1] for communication II.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 918–919, July, 1971.