Sodium Carbonate → HCID 86743865, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 6-ethoxycarbonyl-7-formyl-5-(3-nitrophenyl)-5,8-dihydroimidazo[1,2-a]pyrimidine hydrochloride in a mixture of 20 ml of ethanol and 20 ml of dimethylformamide are added 0.88 g of hydroxylamine hydrochloride and 1.22 g of sodium carbonate and the mixture is stirred at 50° C. for 1.5 hours. The solvent is distilled off under reduced pressure and water is added to the residue, then precipitated crystals are collected by filtration. The crystals are recrystallized from a mixture of chloroform and methanol to give 2.0 g of 6-ethoxycarbonyl-7-hydroxyiminomethyl-5-(3-nitrophenyl)-5,8-dihydroimidazo[1,2-a]pyrimidine, melting at 229°-230° C. with decomposition.

Provenance & Evidence