Multi-step reaction with 3 steps 2: 1.) triethylamine / 1.) acetonitrile, 25-30 deg C (30 min), room temperature (1h), 2.) reflux, 2.6-4.0 kPa3: 84 percent / Pd/C / 1,3,5-trimethyl-benzene / 24 h / Heating  

Multi-step reaction with 2 steps 1: 1.) triethylamine / 1.) acetonitrile, 25-30 deg C (30 min), room temperature (1h), 2.) reflux, 2.6-4.0 kPa2: 84 percent / Pd/C / 1,3,5-trimethyl-benzene / 24 h / Heating