Hydrochloric Acid → HCID 54097963, compound

Participants

Reaction Steps

To a solution of ethyl 2-(4-formamidopyrimidin-2-yl)-2-methoxyiminoacetic acid (syn isomer) (30.8 g) in ethanol (308 ml) was added 1N alcoholic solution (550 ml) of potassium hydroxide and the mixture was stirred for 3.5 hours at ambient temperature. The reaction mixture was cooled in an ice bath and adjusted to pH 3 with concentrated hydrochloric acid (53 ml). The resultant solid was filtered and washed with ethanol (60 ml), water (100 ml), acetone (100 ml) to give a crude product (28.8 g). This product (1 g) was recrystallized from water (10 ml) to give a purified product of 2-(4-aminopyrimidin-2-yl)-2-methoxyiminoacetic acid (dihydrate, syn isomer) (0.4 g), mp. 178°-183° C. (dec.). The following compound was obtained according to the similar manner to that of Preparation 21-(1).

Provenance & Evidence