Water → 3-(Benzyloxy)-4-nitrophenol

Participants

Reaction Conditions

Reaction Steps

39.5 g of the 2-benzyloxy-4-fluoronitrobenzene (0.16 mol) prepared as described in Example 1 are added to a mixture of an aqueous potassium hydroxide solution prepared from 27.2 g of potassium hydroxide (0.48 mol) and 180 ml of distilled water, and 150 ml of dimethyl sulfoxide in a three-neck flask fitted with reflux condenser, stirrer and nitrogen inlet, and the mixture is then heated to 100° C. After 4 hours, the reaction solution is allowed to cool to room temperature, and the residue is filtered off via a fluted filter. The dark-orange solution is then added to 800 ml of water, and concentrated hydrochloric acid is added with vigorous stirring until the mixture is acidic. Within about 1 hour, a white-yellowish, flaky reaction product precipitates; this is filtered off via a Büchner funnel and washed three times with water. The reaction product is recrystallized from ethanol and then dried for 48 hours under nitrogen at 40 ° C./10 mbar in a vacuum drying cabinet.

Provenance & Evidence