Methyl iodide → 1-[4-chloro-3-(trifluoromethyl)phenyl]-S-methylisothiourea hydroiodide

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Reaction Steps

A mixture of 2.54 g 4-chloro-3-trifluoromethyl-phenylthiourea, 0.62 ml of iodomethane in 50 mL of anhydrous EtOH was refluxed for 1 hr to give 1-[4-chloro-3-(trifluoromethyl)phenyl]-S-methylisothiourea hydroiodide. Then it was cooled down to ambient temperature and treated with 0.35 g of 98% hydrazine, heated gently with stirring until the initial vigorous evolution of MeSH subsided and then refluxed for additional 1 hour.

Provenance & Evidence