Potassium Carbonate → tert-butyl 4-[5-(isobutyrylamino)-2-methylphenyl]-3,6-dihydro-1(2H)-pyridinecarboxylate

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a 50-mL RB flask containing 1-[(2,2-dimethylpropanoyl)oxy]-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,6-tetrahydropyridine (500 mg, 1.62 mmol), K2CO3 (670 mg, 4.86 mmol) and PdCl2dppf (155 mg) was added a solution of N-(3-bromo-4-methylphenyl)-2-methylpropanamide (415 mg, 1.62 mmol) in DMF (10.0 mL) at room temperature under argon. The mixture was heated to 80° C. under argon overnight. After cooled to room temperature, the mixture was filtered through celite and the celite was washed with EtOAc (3×20 mL) The filtrates were washed with H2O (20 mL), brine (20 mL), dried over MgSO4, filtered and concentrated in vacuo. The crude material was purified flash chromatography (20% EtOAc/hexane) to give tert-butyl 4-[5-(isobutyrylamino)-2-methylphenyl]-3,6-dihydro-1(2H)-pyridinecarboxylate (360 mg, 62.0%).

Herkunft & Nachweise