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

1: 90 percent / potassium phenylselenite, dipotassium hydrogen phosphate, 18-crown-6 / 24 h / Heating 2: 1.) sodium dimsylate / 1.) DMSO, THF, -5 deg C 2.) DMSO, THF, rt, 1 h 3: 73 percent / silver(II) dipicolinate / benzene; H2O / Ambient temperature View Scheme

1: 1.) sodium dimsylate / 1.) DMSO, THF, -5 deg C 2.) DMSO, THF, rt, 1 h 2: 73 percent / silver(II) dipicolinate / benzene; H2O / Ambient temperature View Scheme

1: 97 percent / ZnCl2 / 3.33 h / Ambient temperature 2: 90 percent / potassium phenylselenite, dipotassium hydrogen phosphate, 18-crown-6 / 24 h / Heating 3: 1.) sodium dimsylate / 1.) DMSO, THF, -5 deg C 2.) DMSO, THF, rt, 1 h 4: 73 percent / silver(II) dipicolinate / benzene; H2O / Ambient temperature View Scheme