Acetamidine monohydrochloride → HCID 178418769, Verbindung

Beteiligte Stoffe

Reaktionsschritte

A solution of dimethyl-(o-methoxyphenoxy)malonate (10 g) in dry methanol (80 ml) was cooled to 0° C. Sodium methylate (6.71 g) was added portionwise. To the suspension was added of acetamidine hydrochloride (2.84 g) and the mixture was stirred overnight at r.t. The solvent was removed under reduced pressure and the residue was suspended in diethyl ether (100 ml). The solid was filtered off, washed with another portion of diethyl ether (100 ml) and dissolved in water (50 ml). The pH was adjusted to 4 by adding glacial acetic acid (25 ml). The white precipitate that formed was filtered off, washed with water and dried to yield 5-(o-methoxyphenoxy)-4,6-dihydroxy-2-methyl-pyrimidine (5.17 g) (or a tautomer) as a white powder.

Herkunft & Nachweise