Nitric Acid → Benzaldehyde, 2-methoxy-5-nitro-

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Reaction Steps

Finely-divided 2-methoxybenzaldehyde (49 g) was added to ice-cold concentrated sulphuric acid (95 ml) and the mixture was stirred to give a deep red solution which was cooled to -5°. The mixture was cooled in a CO2 /acetone bath while fuming nitric acid (sp.gr. 1.5; 20 ml) was added dropwise with stirring whilst the temperature of the reaction remained below 10°.

Provenance & Evidence