3-Acetyl-5-bromopyridine → HCID 59250365, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 1-(5-bromopyridin-3-yl)ethanone (1.01 g, 5.04 mmol) in DCM (20 mL) was added (R)-2-methylpropane-2-sulfinamide (0.555 g, 4.58 mmol) followed by Ti(OEt)4 (1.23 g, 4.58 mmol) dropwise and the reaction mixture was heated to 40° C. over night. After cooling, the solvent was removed under vacuum and the residue taken up in EtOAc (80 mL). This solution was vigorously stirred while a saturated solution of brine (20 mL) was slowly added. After 15 min, the mixture was filtered through a plug of Dicalite and washed with EtOAc. The organic phase was separated, dried over Na2SO4 and evaporated to dryness. The residue was purified by silica gel flash chromatography eluting with a 0 to 50% EtOAc-heptane gradient to give the title compound (0.964 g, 69%) as a yellow oil. MS: 303.1 and 305.0 (M+H+).

Provenance & Evidence