Potassium Carbonate → HCID 21105684, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 2-bromo-5-chloropyridine (131 mg) in DMF (degassed with nitrogen; 4.5 ml) was added to a mixture of tert-butyl 4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-3,6-dihydro-2H-pyridin-1-carbamate (Eastwood, Paul R., Tetrahedron Lett, 41, 19, 2000, 3705-3708; 200 mg), potassium carbonate (0.265 g) and Pd(dppf)Cl2 (50 mg). The mixture was heated at 80° C. for 8 hours. After cooling, the mixture was diluted with dichloromethane and washed with sodium carbonate solution and water. The organic phase was dried over sodium sulfate, filtered and concentrated. The residue was purified by chromatography (silica gel, mobile phase: heptane/ethyl acetate (2%)/dichloromethane (5%), later heptane/ethyl acetate (5%)/dichloromethane (5%).

Provenance & Evidence