A facile one step synthesis of 1,6 -dihydro-7H-pyrazolo[4,3-d]-pyrimidin-7-ones

✍ Scribed by Nalla Ram Reddy; Ghanta Mahesh Reddy; Battu Saida Reddy; Padi Pratap Reddy

• Publisher: Journal of Heterocyclic Chemistry
• Year: 2005
• Tongue: English
• Weight: 77 KB
• Volume: 42
• Category: Article
• ISSN: 0022-152X
• DOI: 10.1002/jhet.5570420502

✦ Synopsis

Abstract

A general synthetic approach to pyrazolo[4,3‐d]pyrimidines is reported. Aldehydes, arylideneanilines, carboxylic acids and orthoesters are used as one‐carbon units for bridging the two amino functions of 4‐amino‐1‐alkyl‐3‐propylpyrazole‐5‐carboxamides.