Benzenesulfenyl chloride → 1-Methyl-2-[nitro(phenylsulfanyl)methylidene]imidazolidine

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Reaction Steps

14.6 g of phenylsulfenyl chloride was added dropwise to a cooled, stirred solution of 14.3 g of Compound 1A in 250 ml of pyridine. The mixture was allowed to stand overnight at room temperature, then excess pyridine was recovered on a rotary evaporator. The residue was treated with 250 ml of water and the mixture was extracted with methylene chloride. The combined extracts were dried and the solvent was evaporated to give a crystalline solid which was triturated with ethyl acetate, then ethanol, to yield 1-methyl-2-(nitro(phenylthio)methylene)imidazolidine (1B) as a yellow solid, melting point: 170°-173°.

Provenance & Evidence