FIELD: chemistry.
SUBSTANCE: method includes chloromethylation of 4-methoxybenzaldehyde with formaldehyde, which is used in the form of paraform, the reaction being carried out in the presence of concentrated hydrochloric acid at 70-75°C while stirring. A reaction mixture is fed into the chloromethylation reaction, wherein the ratio of formaldehyde to 4-methoxybenzaldehyde in the reaction mixture is equal to 1.1-1.8:1. The reaction mass is then heated and stirred for 2.5-3.5 hours, followed by cooling to temperature of -5°C to -10°C. The precipitate is filtered out, dried on air and recrystallised from hexane.
EFFECT: method enables to obtain a pure end product with high output using a simple and safe technique.
4 ex
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