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Investigation of Pyrazole Compounds. VI. 1 The Condensation of Some Heterocyclic Hydrazines with Ethyl Cyanoacetate

✍ Scribed by Weissberger, A.; Porter, H. D.

Book ID: 120377781
Publisher: American Chemical Society
Year: 1944
Tongue: English
Weight: 381 KB
Volume: 66
Category: Article
ISSN: 0002-7863
DOI: 10.1021/ja01239a010

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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