Cesium carbonate → Methyl 1-cyclopentyl-6-oxo-5-(pyrrolidin-1-yl)-1,6-dihydropyridine-3-carboxylate

Participants

Reaction Conditions

Reaction Steps

A mixture of methyl 5-bromo-1-cyclopentyl-6-oxo-1,6-dihydropyridine-3-carboxylate (100 mg, 0.33 mmol), pyrrolidine (33 uL, 0.40 mmol), cesium carbonate (150 mg, 0.46 mmol), tris(dibenzylideneacetone)dipalladium (0) (3 mg, 0.0033 mmol), rac-2-2′-bis(diphenyl-phosphino)-1,1′-binaphthyl (3.1 mg, 0.005 mmol) was purged with nitrogen for 30 min, followed by the addition of anhydrous toluene (1.5 mL). The resulting light-brown solution was heated to 95° C. for 17. The mixture was brought to room temperature and partitioned between ethyl acetate and saturated NH4Cl. The organic phase was separated, washed with saturated NH4Cl, brine, dried over MgSO4 and chromatographed on silica gel using 3:1 hexanes:ethyl acetate to afford the title compound as a yellow oil. MS m/z: 291(M+1).

Provenance & Evidence