Urea → Ethyl 2-amino-1,3-oxazole-4-carboxylate

Participants

Reaction Steps

A mixture of ethyl bromopyruvate (5.00 g), urea (2.31 g) and ethanol (51 mL) was refluxed overnight. The reaction mixture was cooled to room temperature, and the solvent was evaporated under reduced pressure. To the residue was added water, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure to give the title compound (2.87 g).

Provenance & Evidence