Toluene → HCID 20285418, compound

Participants

Reaction Steps

The mixture of 2.1 g of 1-ethyl-β-oxo-2-pyrrolpropionitrile, 25 ml of toluene and 1.6 g of triethylamine is treated with 1.6 g of phenylisocyanate while stirring. It is allowed to stand overnight at room temperature, evaporated and the residue dissolved in methanol. The solution is poured into 300 ml of water containing 5 ml of 5 N hydrochloric acid and the precipitate is collected. It is dissolved in 5% aqueous sodium hydroxide, the solution filtered, the filtrate re-acidified, the solids collected, washed with water, dried and recrystallized from ethanol, to yield the 1-ethyl-β-oxo-α-phenylcarbamoyl-2-pyrrolpropionitrile melting at 144°-145°.

Provenance & Evidence