pyridine-2-carboxylic acid, Ag(II) salt in water; benzene 1.5 h; Ambient temperature;

Multi-step reaction with 2 steps 1: 1.) 1.6 M BuLi / 1.) hexane, THF, 3 h, - 5 deg C, 2.) 1 h2: 53 percent / NaOH, TEBA / tetrahydrofuran / Ambient temperature