New method for the preparation of...

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C - Chemistry, Metallurgy

07

C

C07C 205/44 (2006.01) C07C 201/12 (2006.01)

Patent

CA 2200227

The invention provides a method for the preparation of 3,4-dihydroxy-5- nitrobenzaldehyde by reacting 3-ethoxy-4-hydroxy-5- nitrobenzaldehyde with a reagent comprising zinc chloride, water and hydrogen chloride.

Procédé de préparation de 3,4-dihydroxy-5-nitrobenzaldéhyde par une réaction entre le 3-éthoxy-4-hydroxy-5-nitrobenzaldéhyde et un réactif comportant du chlorure de zinc, de l'eau et du chlorure d'hydrogène.

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