Experimental Section16 5-Nonylbarbituric Acid (Ii).-To a solution prepared by dissolving 23 g (1 g-atom) of sodium in 1000 ml of anhydrous ethanol\?-ere added 34.5 g (0.57 mole) of dry urea in 300 ml of anhydrous ethanol and 165 g (0.57 mole) of diethyl nonylmalonate. 16 The mixture was heated under refliix with agitation for 2.5 hr. Excess alcohol was removed by flash evaporation, and the residue was dissolved in wat, er and acidified to pH 1-2 with ...
