Sulfuric Acid → Dimethyl pyridine-3,5-dicarboxylate

Participants

Reaction Steps

3,5-Pyridinedicarboxylic acid (1.5 g, 63 mmol) and conc. H2SO4 (0.9 mL) in MeOH (15 mL) are heated in a microwave oven at 120° C. for 2 h. The solvent is evaporated to give a residue with is partitioned between ethyl acetate and sat. aq. NaHCO3. The organic phase is washed with brine, dried over Na2SO4, filtered and evaporated to give a light yellow solid. MS (LC-MS): 196 [M+H]+ TLC, Rf (ethyl acetate/hexane 1:1)=0.56.

Provenance & Evidence