1: 85 percent / tBuOK / 1-methyl-pyrrolidin-2-one / 7 h / 60 - 70 °C 2: 85 percent / H2 / Pd/C / ethanol / 20 °C View Scheme

potassium tert-butylate in 1-methyl-pyrrolidin-2-one T=60 - 70°C; 7 h;