Water → HCID 10813224, compound

Participants

Reaction Steps

4.23 g (10.5 mmol) of the above ethyl 3,5-difluoro-4-hydroxy-6-pivaloylamino-2-(2-tetrahydropyranyloxy)benzoate was dissolved in 50 mL of dichloromethane, 2.4 mL (13.7 mmol) of diisopropylethylamine and 0.96 mL (12.6 mmol) of chloromethyl methyl ether were added under ice-cooling and the mixture was stirred at the same temperature for 30 minutes. Water was added to the reaction solution and the mixture was extracted once with chloroform. The organic layer was washed once with an aqueous saturated solution of sodium chloride and dried over anhydrous sodium sulfate. The solvent was distilled off under reduced pressure and the residue was triturated with n-hexane to give 4.33 g of ethyl 3,5-difluoro-4-methoxymethoxy-6-pivaloylamino-2-(2-tetrahydropyranyloxy)benzoate (yield: 93%).

Provenance & Evidence