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ChemInform Abstract: The Synthesis of 5-Substituted 3-Benzoylamino-6-(2-substituted amino-1- ethenyl)-2H-pyran-2-ones and Their Transformations into 2H-Pyrano(3,2- c)pyridine Derivatives.

✍ Scribed by S. STRAH; J. SVETE; B. STANOVNIK

Book ID: 112041374
Publisher: John Wiley and Sons
Year: 2010
Weight: 29 KB
Volume: 27
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199650158

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## Abstract An efficient two‐step synthesis of novel 3‐(5‐amino‐[1,3,4]thiadiazol‐2‐yl)‐2__H__‐pyrano[2,3‐__c__]pyridine‐2‐ones was developed. In the first step, a new 2__H__‐pyrano[2,3‐__c__]pyridine‐3‐carboxamide **5** was prepared by Knoevenagel condensation of pyridoxal hydrochloride with cyano