1: 5 percent / tert-BuOK / 2-methyl-propan-2-ol / 1.5 h / Heating; in a stream of nitrogen; other gas: dry air 2: 59 percent / p-cymene / Pd-carbon / 5 h / Heating View Scheme

potassium tert-butylate in tert-butyl alcohol 1.5 h; Heatingstream of nitrogen;