Vanillin → HCID 18433807, compound

Participants

Reaction Steps

To a solution of vanillin (500 mg), phenylboronic acid (1.60 g) and copper(II) acetate (712 mg) in methylene chloride (10 mL) were added molecular sieve 4A (750 mg) and triethylamine (665 mg), and the mixture was stirred at room temperature for 2 days. The reaction solution was concentrated under reduced pressure, and the residue was dissolved in ethyl acetate (50 mL). The solution was washed successively with 0.5M aqueous hydrochloric acid solution, 1M aqueous sodium hydrogen carbonate solution and saturated brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane:ethyl acetate=10:1) to give 3-methoxy-4-phenoxybenzaldehyde (440 mg) as a yellow solid.

Provenance & Evidence