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ChemInform Abstract: Synthesis of New 2-Substituted-pyrazolo[4′,3′:5,6]pyrano[3,2-e][1,2,4]triazolo [1,5-c]pyrimidine Derivatives.

✍ Scribed by S. M. HASSAN; M. M. KHAFAGY; H. A. EMAN; A. A. EL-MAGHRABY

Publisher: John Wiley and Sons
Year: 2010
Weight: 32 KB
Volume: 29
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199826192

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✦ Synopsis

Synthesis of New 2-Substituted-pyrazolo[4',3':5,6]pyrano[3,2e][1,2,4]triazolo [1,5-c]pyrimidine Derivatives.

-Starting from pyrazole (III) the pyrimidine (V) is prepared which is further treated with different carboxylic acid derivatives to form novel pyrimidines of type (VI) and (VIII). Preparation of (VI) is improved using triethyl orthoformate instead of formic acid.

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