Pyridine → HCID 23093484, compound

Participants

Reaction Steps

To a mixture of tert-butyl 2-hydroxyethyl(methyl)carbamate (1.75 g) obtained in Reference Synthetic Example 1 and ethyl acetate (10 mL) were added 3-chlorobenzoyl chloride (1.92 g) and pyridine (0.97 mL). After stirring at room temperature for 1 hr, the reaction solution was stirred at 60° C. for 6 hrs. To the reaction solution was added ethyl acetate (80 mL), and washed sequentially with water (20 mL), saturated aqueous solution of sodium bicarbonate (20 mL) and water (20 mL), and dried over anhydrous magnesium sulfate. The solution was concentrated under reduced pressure, and to the residue was added 4N hydrogen chloride-ethyl acetate solution (10 mL). After stirring at room temperature for 22 hrs, diethyl ether (15 mL) was added, and the depositting solid was collected by filtration. The solid was washed twice with ethyl acetate (15 mL), and dried at 60° C. under reduced pressure to give title compound as white solid (2.01 g).

Provenance & Evidence