Hydrochloric Acid → 1-[4-(N-Hydroxyamidino)-2,3-dihydro-1H-inden-1-ylideneamino]-2-amino-4-ethyl-imidazole dihydrochloride

Participants

Reaction Conditions

Reaction Steps

3.2 ml of 32% hydrochloric acid (Merck, Darmstadt, Germany; p.a.) are added, with stirring, to a mixture of 3.28 g (0.016 mol) of 4-(N-hydroxyamidino)-2,3-dihydro-1H-inden-1-one oxime, 2.6 g (0.016 mol) of 1,2-diamino-4-ethyl-imidazole hydrochloride and 150 ml of isopropanol, and the reaction mixture is stirred at 80° C. for 90 hours. The reaction mixture is filtered while hot and the filtration product is washed with isopropanol and dried. In that manner there is obtained the title compound, m.p. 245°-246° C., 1H-NMR (DMSO/D2O): δ=8.22 (d, 1H); 7.73 (d, 1H); 7.59 (t, 1H); 7.19 (s, 1H); 3.2 (m, 4H); 2.47 (m, 2H); 1.17 (t, 3H).

Provenance & Evidence