Sodium Hydroxide → HCID 19967416, compound

Participants

Reaction Steps

O-Benzylhydroxylamine hydrochloride (3.0 g, 18.8 mmole) was dissolved in water (3.5 mL) then combined with diethyl ether (85 mL) followed by the addition of sodium hydroxide (0.75 g, 18.8 mmole) in water. After several minutes a solution of N-methyl-N-phenylcarbamoyl chloride (3.19 g, 18.8 mmole) in diethyl ether (25 mL) was added. A white precipitate formed. The solid was isolated by filtration then dissolved in water. The solution was diluted with saturated aqueous sodium bicarbonate and sufficient solid sodium carbonate was added to bring the pH to 9. The solution was extracted with diethyl ether (5×50 mL). The ether extracts were combined, dried and then concentrated to provide the crude product as a beige solid. The crude product was purified by silica gel chromatography (9:1 hexanes/ethyl acetate) to provide 3.1 g of 1-benzyloxy-3-methyl-3-phenylurea.

Provenance & Evidence