Acetic Acid → HCID 13151892, compound

Participants

Reaction Steps

320 Mg. 8-chloro-3-cyanodibenzo[b,f]-thiepin-5,5-dioxide is refluxed for 24 hours in a mixture of 10 cc. acetic acid and 10 cc. 50% aqueous sulfuric acid. The mixture is cooled down and the crystalline product filtered, washed with water and dried at 70° C., 0.5 mm./Hg., to yield 289 mg. (82%) of pure acid, m.p. 276°-278° C.

Provenance & Evidence