HCID 15677249, compound → HCID 178440053, compound

Participants

Reaction Steps

To 40 g (0.31 moles) of 3-oximino-2,4-pentanedione dissolved in 297 ml of acetonitrile was added 40.64 g (0.31 moles) of methyl d,l-norvaline. The reaction mixture was refluxed 21.2 h under nitrogen, cooled, then concentrated in vacuo. The resulting oil was dissolved in 50 ml of ethanol and 140 ml of 10% aqueous sodium hydroxide. After 4 h of reflux, the cooled mixture was extracted with ethyl acetate (900 ml total) and dried over anhydrous sodium sulfate. Removal of the solvent in vacuo afforded 0.16 moles (51% yield) of 5-acetyl-4-methyl-2-propylimidazole.

Provenance & Evidence