4-Hydroxybenzaldehyde → 4-Methoxybenzaldehyde

Participants

Reaction Steps

20 g of p-hydroxybenzaldehyde (0.164 mol) was reacted with 29.0 g of dimethyl sulfate (0.230 mol) and 22.0 g of sodium carbonate (0.20 mol) for 2 hr. at 75°-80° C. A total of 12 ml of water was added in small portions over the last hour. Work-up by addition of water, acidification and benzene extraction yielded 22.27 g of p-methoxybenzaldehyde (99.9%) containing not more than 0.1% p-hydroxybenzaldehyde.

Provenance & Evidence