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3-Carboxy­anilinium 3-carb­oxy-4-hydroxy­benzene­sulfonate: the 1:1 proton-transfer compound of 5-sulfosalicylic acid with 3-amino­benzoic acid

✍ Scribed by Smith, Graham

Publisher
International Union of Crystallography
Year
2005
Tongue
English
Weight
204 KB
Volume
61
Category
Article
ISSN
1600-5368

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## Abstract The 1__H__‐pyrazole‐3‐carboxylic acid **2**, obtained from the furan‐2,3‐dione **1** and __N__‐Benzylidene‐__N__'‐(3‐nitrophenyl) hydrazine, was converted via reactions of its acid chloride **3** with various alcohols or N‐nucleo‐philes into the corresponding ester or amide derivatives