Synthesis and Characterization of 1-Amino-4-methylthio-2-nitro-1,3- butadienes.

Treatment of 3-nitrothiophene with prim. and sec. amines, followed by S-methylation leads to (Z,Z)-1- amino-4-methylthio-2-nitro-1,3-butadienes (3). Oxidation of these with LTA yields a mixture of the 2-methylthio-4-nitropyrroles (6) and the acetoxylated butadienes (8).