Acetic Anhydride → HCID 23329085, compound

Participants

Reaction Steps

3.9 g of 4-[4-chloro-3-(1-pyrrolidinylsulfonyl)-phenyl]-4-oxobutanoic acid are boiled under a reflux condenser in 50 ml of acetic anhydride for 1 hour, the solvent is driven off under reduced pressure and the residue is caused to crystallize under diisopropyl ether. 5-[4-Chloro-3-(1-pyrrolidinylsulfonyl)-phenyl]-2,3-dihydro-3-oxofuran is obtained in the form of light red-colored crystals of melting point 108°-111° C.

Provenance & Evidence