Process for preparing a basic thioether and the salt thereof

Details Process for preparing a basic thioether and the salt thereof Process for preparing a basic thioether and the salt thereof

C - Chemistry, Metallurgy

07

D

260/367.3

C07D 307/52 (2006.01)

Patent

CA 1262913

A b s t r a c t The invention relates to a new process for preparing 1-{2-[5-dimethylaminomethyl-2-(furylmethylthio)- -ethy]}amino-1-methylamino-2-nitroethylene of the for- mula (I) Image (I) and its hydrochloride, which comprises reacting an 1- -{2-[5-dimethylaminomethyl-2-(furylmethylthio)-ethyl]}- -amino-1-(substituted thio)-2-nitroethylene of the general formula (VI), Image (VI) wherein R stands for an optionally substituted alkyl group containing 1 to 4 carbon atoms or an oxoalkyl, aryl, aralkyl, or oxoaralkyl group, with an agent capable of splitting off a mercaptan, in an organic solvent, optionally in the presence of an acid-binding agent, then reacting the in situ prepared 1-{2-[5-dimethylaminomethyl-2-(furylmethylthio)-ethy]} - -3-nitroketeneimine of the formula (VII) Image (VII) with methylamine and finally, if desired, separating the obtained base of formula (I), purifying it and/or, if desired, transforming it to its hydrochloride,

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