Hydrochloric Acid → HCID 178478603, compound

Participants

Reaction Steps

A suspension of 3-amino-4-{2-[(5-piperidinomethyl-3-thienyl)methylthio]ethylamino}-1,2,5-thiadiazole 1-oxide (6.1 g; 15.8 mmoles) [prepared according to published U.K. patent application No. 2,067,987] in 80 ml of methanol was treated with 10.5 ml of concentrated HCl. After stirring at ambient temperature for 3 hours, the solution was concentrated and the residue triturated with 50 ml of 1-propanol, filtered and dried to give 5.86 g (83%) of product. A sample was recrystallized from methanol-acetone to give the title compound, mp 201°-214° C. (dec.).

Provenance & Evidence