Sodium Carbonate → 2-[3,5-bis(trifluoromethyl)phenyl]-N-(6'-chloro-4-methyl-3,4'-bipyridin-3'-yl)-N,2-dimethylpropanamide

Participants

Reaction Conditions

Reaction Steps

2-[3,5-bis(trifluoromethyl)phenyl]-N-(6-chloro-4-iodo-3-pyridinyl)-N,2-dimethylpropanamide (400 mg, 0.726 mmol), 4-methylpyridine-3 boronic acid (130 mg, 0.944 mmol), sodium carbonate (0.8 mL, 2M), tetrakistriphenylphosphine palladium (7.8 mg, 0.00726 mmol) was added in dioxane (4 mL) and stirred under argon before heating in the microwave at 110° C. for 30 minutes, added more 4-methylpyridine-3 boronic acid (67.5 mg, 0.49 mmol) and tetrakistriphenylphosphinepalladium (7.8 mg, 0.00726 mmol) and heated at 110° C. for 30 minutes. therefore added more 4-methylpyridine-3 boronic acid (51 mg, 037 mmol), tetrakistriphenylphosphinepalladium (7.8 mg, 0.00726 mmol) and heated under microwave conditions at 110° C. for 30 minutes, therefore added 4-methylpyridine-3 boronic acid (47 mg, 0.34 mmol), tetrakistriphenylphosphinepalladium (7.8 mg, 0.00726 mmol) and heated at 110° C. for 30 minutes. Residue partitioned between EtOAc and Brine. Aqueous layer was extracted with EtOAc ×3. Combined extracts were dried and solvent evaporated. Residue purified on a 12+M horizon column eluting with Pet Ether to 1:1 EtOAc: Pet Ether. Unable to isolate clean fractions. Sample sent to be purified by Mass Directed Auto-Prep (MDAP) chromatography, white solid didn't dissolve was found to be desired material. This was combined with product isolated from the MDAP to afford the title compound as a white solid in an 83% yield.

Provenance & Evidence