1: 98 percent / pyridine / 1.) 1 h, 8 deg C, 2.) 20 h, room temp. 2: 4-dimethylaminopyridine / acetonitrile / 3 h / Ambient temperature 3: 98 percent / H2 / 5percent Pd/C / methanol / 2 h / 760 Torr / Ambient temperature View Scheme

Multi-step reaction with 2 steps 1: 98 percent / pyridine / 1.) 1 h, 8 deg C, 2.) 20 h, room temp.2: 4-dimethylaminopyridine / acetonitrile / 3 h / Ambient temperature