Reaktion #458011

Reaktionsgleichung

3-amino-4-{2-[(5-dimethylaminomethyl-3-thienyl)methylthio]ethylamino}-1,2,5-thiadiazole 1-oxide

HCl

→

product

Ausbeute 80.0%

N-{2-[(5-dimethylaminomethyl-3-thienyl)methylthio)ethyl}-ethanediimidamide trihydrochloride

Ausbeute 80.0%

Lösungsmittel

methanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   Einengenthe solution was concentrated
2. 2
   Sonstigethe residue triturated with 1-propanol
3. 3
   Filtrationfiltered
4. 4
   Sonstigedried

Vorschrift

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 published United Kingdom Patent Application No. 2,067,987] 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.).

Quelle