Triethylamine → HCID 59909752, compound

Participants

Reaction Conditions

Reaction Steps

A solution of ethyl 5-{(1R)-1 -[2-(tert-butoxy)-2-oxoethyl]-4-cyclohexylbutyl}-1,2,4-oxadiazole-3-carboxylate (Preparation 3) (1.18 g, 3.00 mmol) and triethylamine (1.51 g, 15.00 mmol) in ethanol (30 ml) was treated with glycine methyl ester hydrochloride (1.88 g, 15.00 mmol) and the resulting mixture was heated at 80° C. under a nitrogen atmosphere for 16 hours. The mixture was cooled and the solvent removed under reduced pressure. The residue was partitioned between water and ethyl acetate. The combined organic layers were washed with brine, dried over anhydrous sodium sulphate, filtered and the solvent removed under reduced pressure. The residue was purified by column chromatography on silica gel eluting with a gradient system of hexane:ethyl acetate (90:10) gradually changing to hexane:ethyl acetate (50:50) to afford the title compound (456 mg).

Provenance & Evidence