Hydrochloric Acid → HCID 178483273, compound
Reaction equation
[NH2:1][C:2]1[C:6]([NH:7][CH2:8][CH2:9][S:10][CH2:11][C:12]2[CH:16]=[C:15]([CH2:17][N:18]([CH3:20])[CH3:19])[S:14][CH:13]=2)=[N:5]S(=O)[N:3]=1.[ClH:22]>CO>[ClH:22].[ClH:22].[ClH:22].[CH3:20][N:18]([CH2:17][C:15]1[S:14][CH:13]=[C:12]([CH2:11][S:10][CH2:9][CH2:8][NH:7][C:6](=[NH:5])[C:2](=[NH:1])[NH2:3])[CH:16]=1)[CH3:19]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
A suspension of 3-amino-4-{2-[(5-dimethylaminomethyl-3-thienyl)methylthio]ethylamino}-1,2,5-thiadiazole 1-oxide (7.8 g; 22.6 mmoles) [prepared according to the procedure of U.S. Pat. No. 4,374,248] in 150 ml of methanol was treated with 15.0 ml of concentrated HCl. After stirring at ambient temperature for 3 hours, the solution was concentrated and the residue triturated with 1-propanol, filtered and dried to give 7.38 g (80%) of product. A sample was recrystallized from methanol-acetone to give the title compound, mp 190°-205° C. (dec.).