Benzoyl chloride → 5-Formyl-2-methoxyphenyl benzoate

関与物質

反応手順

A stirred suspension of 3-hydroxy-4-methoxybenzaldehyde (50 g) in water (200 mL) at between 0 and 5° C. is treated dropwise with an aqueous solution of sodium hydroxide (200 mL; 20% w/v), followed at between 0 and 5° C. by benzoyl chloride (38 mL). The reaction mixture is stirred at between 0 and 5° C. for 1 hour and then it is allowed to warn to room temperature and is stirred for a further period of 2 hours. The resulting solution is extracted with dichloromethane (2×200 mL) and the combined extract is washed with water (200 mL), dried over magnesium sulfate and concentrated, to give 2-methoxy-5-formylphenyl benzoate (35.2 g), m.p. 70-72° C.

情報源と証拠