p-Toluenesulfonic acid → HCID 22476589, compound

Participants

Reaction Steps

1-(4-Phenylphenyl)cyclopentan-1-ol (7.50 g, 31.5 mmol), p-toluenesulfonic acid (650 mg) and toluene (200 mL) were mixed together in a 500 mL 3 neck flask fitted with a thermometer and Dean Stark trap and stirred at reflux for 4 hours under a nitrogen atmosphere. The reaction was then allowed to cool to room temperature and concentrated under reduced vacuum. The resulting semi-solid was taken into methylene chloride, washed once with water, dried over potassium carbonate, filtered, and concentrated under reduced vacuum to yield 7.73 g as a solid. This material was purified via silica gel chromatography employing the Water's Prep 2000 and eluting with a solvent of hexane/methylene chloride 4:1 to yield the intermediate title compound (4.71 g, 68%) as a white solid. Fd M.S. 220.1 (M*).

Provenance & Evidence