Cysteamine Hydrochloride → N-[(2H-1,3-Benzodioxol-5-yl)methyl]-N'-(2-sulfanylethyl)urea

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Reaction Steps

6 g (0.022 mol) of phenylpiperonylcarbamate, prepared as in example 2A, are placed in pyridine and a heterogenous suspension is obtained. Separately a solution made in a nitrogen stream of 2.75 g (0.024 mol) of cysteamine hydrochloride and of NaOH (0.96 g, 0.024 mol) is prepared. The cysteamine solution thus obtained is added to the phenylpiperonylcarbamate solution and heated while stirring for 8 hours.

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