4-Nitrophenyl trifluoroacetate → HCID 178524481, Verbindung

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

Uracil-5-carboxylic acid (1.0 g) is dissolved in dry pyridine (20 ml) under heating. p-Nitrophenyl trifluroacetate (1.8 g) is added to the solution which is subsequently stirred at 45° C for 30 minutes. Then, the solution is concentrated to dryness under reduced pressure, and the cyrstals thus obtained are washed with chloroform and then acetone to give the active ester, i.e. p-nitrophenyl 2,4-dihydroxypyrimidine-5-carboxylate (1.16 g). M.P. 298°-299° C (decomp.).

Herkunft & Nachweise