## Abstract The 1__H__‐pyrazole‐3‐carboxylic acid 2 or its remarkably stable acid chloride 3 can easily be converted into the corresponding ester or amide derivatives 4 or 5, respectively, from reaction with alcohols or __N__‐nucleophiles. Pyrazolo[3,4‐__d__]pyridazines 6a,b are obtained from cyclo
Experimental and theoretical studies on the functionalization reactions of 4-benzoyl-1,5-diphenyl-1H-pyrazole-3-carboxylic acid and-acid chloride with various aminophenols
✍ Scribed by Ismail Yıldırım; Fatma Kandemirli
- Publisher
- Springer
- Year
- 2006
- Tongue
- English
- Weight
- 293 KB
- Volume
- 17
- Category
- Article
- ISSN
- 1040-0400
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## Abstract magnified image 1,5‐Diphenyl‐1__H__‐pyrazole‐3,4‐dicarboxylic acid‐4‐ethyl ester **2**, obtained from the 4‐ethoxycarbonyl‐5‐phenyl‐2,3‐furandione **1** and __N__‐benzylidene‐__N__′‐phenyl hydrazine, was converted __via__ reactions of its acid chloride **3** with various alcohols or N‐
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