FIELD: organic chemistry. SUBSTANCE: formaldehyde reagent for chemical process or reaction is prepared as formaldehyde-alcoholic complex by interaction of paraformaldehyde with 0.25-3 mole equivalents of aliphatic alcohol in the presence of base at catalytic amount. Chemical process involves synthesis of aromatic azomethine at interaction of aniline with formaldehyde. Then azomethine can be used for synthesis of halogenacetanilide. EFFECT: improved method of synthesis. 3 cl
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