Pyridine → HCID 54382137, compound

Participants

Reaction Conditions

Reaction Steps

Compound 16 (569 mg, 1.20 mmol) was dissolved by addition of pyridine (17 mL). Pivaloyl chloride (188 μl, 1.57 mmol) was added to the solution, and the mixture was stirred at −5° C. for 1 hour. Pivaloyl chloride (188 μl, 1.57 mmol) was further added thereto, and the mixture was stirred at −5° C. for 1 hour. The reaction mixture was diluted with ethyl acetate, and filtered through Celite, and the filtrate was washed successively with saturated aqueous sodium hydrogencarbonate and saturated brine. The ethyl acetate layer was dried over magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (toluene:AcOEt=10:1) to obtain Compound 17 (648 mg, 96.7%).

Provenance & Evidence