Hydrochloric Acid → HCID 178485078, compound

Participants

Reaction Steps

Aout 0.6 g. of N-methyl-N'-2-(2-dimethylaminomethyl-4-thiazolylmethylthio)ethyl-N"-cyanoguanidine were dissolved in 8 ml. of 1.5 N aqueous hydrochloric acid. The resulting solution was allowed to remain at ambient temperature for about four days. Volatile constituents were then removed by evaporation in vacuo. The resulting residue, comprising N-methyl-N'-2-(2-dimethylaminomethyl-4-thiazolylmethylthio)ethyl-N"-aminocarbonylguanidine dihydrochloride formed in the above reaction, was dissolved in ethanol and the ethanol removed by evaporation. The residue obtained thereby was recrystallized from isopropanol. The crystalline product was collected and digested with ethyl acetate. The ethyl acetate was removed by evaporation and the product obtained was crystallized from isopropanol to yield N-methyl-N'-2-(2-dimethylaminomethyl-4-thiazolylmethylthio)ethyl-N"-aminocarbonylguanidine dihydrochloride melting at 156.5°-159.5° C.

Provenance & Evidence