Carbon Disulfide → (2-{[(5-Methyl-1H-imidazol-4-yl)methyl]sulfanyl}ethyl)carbamodithioic acid

Beteiligte Stoffe

Reaktionsschritte

A solution of 2-((5-methyl-4-imidazolyl)methylthio)ethylamine (10.2 g) in ethanol (75 ml) was added slowly, with stirring, to carbon disulphide (200 ml). The mixture was set aside overnight at room temperature and the solid formed was collected and recrystallised from aqueous isopropyl alcohol to afford N-[2-((5-methyl-4-imidazolyl)methylthio)ethyl]dithiocarbamic acid (9.8 g), m.p. 127°-129°. This was treated with dicyclohexylcarbodiimide in dry pyridine at -10°, and the mixture was filtered. The filtrate was evaporated to dryness and the residue was treated sith ethanolic hydrogen chloride to give 5-methyl-4-(2-isothiocyanatoethylthiomethyl)imidazole hydrochloride.

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