Method for the preparation of 3,4-dihydroxy-5-nitrobenzaldehyde

Details Method for the preparation of 3,4-dihydroxy-5-nitrobenzaldehyde Method for the preparation of 3,4-dihydroxy-5-nitrobenzaldehyde

C - Chemistry, Metallurgy

07

C

C07C 205/44 (2006.01) C07C 201/12 (2006.01) C07C 205/45 (2006.01)

Patent

CA 2110583

A method for the preparation of 3,4-dihydroxy-5-nitrobenzaldehyde by reacting 4-hydroxy-3-methoxy-5-nitrobenzalde- hyde with a strong nucleophilic agent which may be created by reacting an aromatic mercapto compound with a strong organic or inorganic alkali metal base such as lithium hydroxide. The reaction is performed at elevated temperatures using an aprotic polar solvent. It is preferably carried out in an inert atmosphere.

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