1,1-Bis(methylthio)-2-nitroethylene → 1-(2-Chloro-5-pyridylmethyl)4-methyl-2-(nitromethylene)imidazolidine

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A mixture of 2 g of 2-amino-1-(2-chloro-5-pyridylmethylamino)propane, 1.6 g of 1-nitro-2,2-bis(methylthio)ethylene and 20 ml of methanol was refluxed for hours with stirring. A crystaline product was precipitated after standing at room temperature. The product was filtered with suction, washed with methanol and then dried in vacuum. 1.9 g of 1-(2-chloro-5-pyridylmethyl)-4-methyl-2-(nitromethylene)imidazolidine was obtained in form of light yellow crystals.

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