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A new synthesis of 1-aryl-5-cyano-1H-pyrazole-4-carboxylic acid, ethyl esters

✍ Scribed by James R. Beck; Stephen A. Ackmann; Michael A. Staszak; Fred L. Wright

Book ID: 112128960
Publisher: Journal of Heterocyclic Chemistry
Year: 1988
Tongue: English
Weight: 347 KB
Volume: 25
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570250348

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## Abstract A compilation of ^13^C NMR chemical shifts for 13 pairs of 3‐ and 5‐cyano‐substituted pyrazole regioisomers is reported. All of the ring carbon and cyano carbon ^13^C chemical shifts show a regular, predictable correlation with the particular isomer, whether 3‐cyano or 5‐cyano. These sh