Water → HCID 67548609, compound

Participants

Reaction Steps

To a solution of the resulting crude product of ethyl 3-[(5-benzo[b]furoyl)amino]-4-(5-chlorothiophen-3-yl)-4-oxobutyrate (896 mg) in N,N-dimethylformamide (7 ml) was added phosphoryl chloride (0.48 ml) at room temperature, and the mixture was stirred at the same temperature overnight. To the reaction mixture was added water, the mixture was extracted with ethyl acetate, dried over anhydrous sodium sulfate and the solvent was removed under reduced pressure. The resulting residue was purified by silica gel column chromatography (solvent: hexane:acetone=7:1), and then, triturated with diethyl ether to obtain ethyl 2-(5-benzo[b]furyl)-5-(5-chloro-thiophen-3-yl)oxazol-4-ylacetate (349 mg) as colorless powder.

Provenance & Evidence