Benzenesulfonic acid, 4-methyl-, compd. with pyridine (1:1) → N-[2-(2-Isopropyl-7,8-dihydro-6H-indeno[5,4-d][1,3]oxazol-8-yl)ethyl]acetamide

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Reaction Steps

N-{3-[2-(Acetylamino)ethyl]-4-hydroxy-2,3-dihydro-1H-inden-5-yl}-2-methylpropanamide (118 mg, 0.369 mmol) and pyridinium p-toluenesulfonate (18.5 mg, 0.074 mmol) were heated under reflux in xylene (3.7 mL) for 5 hr. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (methanol/ethyl acetate=0/100→10/90) to give the title compound (60 mg, yield 57%).

Provenance & Evidence