Cornforth reagent → 6-Bromo-4-iodonicotinaldehyde

Participants

Reaction Steps

A mixture of (6-bromo-4-iodopyridin-3-yl)methanol (300 mg, 1.0 mmol) and pyridinium dichromate (720 mg, 1.9 mmol) in methylene chloride (4 mL) was stirred at room temperature for 4 hours. The reaction mixture was diluted with methylene chloride (20 mL), filtered over Celite, and evaporated in vacuo to afford a residue that was purified by flash chromatography (silica, 4 g, ISCO, 0-40% ethyl acetate in heptane) to afford the title compound as a white solid (180 mg, 60%), which was used in the next step without further purification.

Provenance & Evidence