Pyridine → HCID 57104612, compound

Participants

Reaction Steps

(R)-Glycerol acetonide (10 g) was dissolved in anhydrous ether (200 ml) and, after adding pyridine (6.6 g) at −10° C., a solution of chloromethyl chloroformate (10.7 g) in anhydrous ether (20 ml) was added dropwise over the period of 10 minutes. After the reaction mixture was stirred at room temperature for 20 hours, the deposited pyridine hydrochloride was removed by filtration. The filtrate was washed with a saturated sodium chloride aqueous solution (200 ml×2), and then dried over anhydrous magnesium sulfate. The residue obtained by distilling off the solvent under reduced pressure was purified by subjecting to silica gel chromatography (eluent: hexane→ethyl acetate/hexane=1/5→ethyl acetate/hexane=3/5) to obtain chloromethyl [(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]methyl carbonate (17 g) as a colorless oily product.

Provenance & Evidence