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US 5,710,343 AGranted
Method for the preparation of 3,4-dihydroxy-5-nitrobenzaldehyde
AssigneeOrion-yhtyma Oy
InventorReijo Johannes Backstrom
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Abstract
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.
Claims10
A method for the preparation of 3,4-dihydroxy-5-nitrobenzaldehyde characterized in that 3-ethoxy-4-hydroxy-5-nitrobenzaldehyde is reacted with a reagent comprising zinc chloride, water and hydrogen chloride.
Dependencies are inferred from the claim text.