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Synthesis of pyrazolo-annelated heterocyclic ring compounds such as pyrazolo[3,4-b]pyridines and pyrazolo[4′,3′:5,6]-pyrido[2,3-d]pyrimidines

✍ Scribed by Madhukar N. Jachak; Appasaheb B. Avhale; Ragunath B. Toche; Ram W. Sabnis

Publisher
Journal of Heterocyclic Chemistry
Year
2007
Tongue
English
Weight
311 KB
Volume
44
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

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A series of pyrazolo[3,4‐b]pyridines has been synthesized by Friedländer condensation of 5‐amino‐pyrazole‐4‐carbaldehyde 1 with active methylene compounds in basic medium. Pyrazolo[4′3′:5,6]pyrido‐[2,3‐d]pyrimidines have been synthesized from pyrazolo[3,4‐b]pyridines using substituted urea and acetic anhydride.

📜 SIMILAR VOLUMES

Synthesis of new pyrazolo[1,5-a]pyrimidi
Synthesis of new pyrazolo[1,5-a]pyrimidines and pyrazolo[3,4-b]pyridines
✍ Saleh M. Al-Mousawi; Mohammad A. Mohammad; Mohamad H. Elnagdi 📂 Article 📅 2001 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 29 KB 👁 1 views

## Abstract While 3(5)‐aminopyrazole reacts with enaminonitrile to yield pyrazolo[1,5‐__a__]pyrimidines, 3‐amino‐5‐pyrazolone reacts with the same reagents to yields pyrazolo[3,4‐__b__]pyridines.

ChemInform Abstract: Synthesis of New Py
ChemInform Abstract: Synthesis of New Pyrazolo[1,5-a]pyrimidines and Pyrazolo[3,4-b]pyridines.
✍ Saleh M. Al-Mousawi; Mohammad A. Mohammad; Mohamad H. Elnagdi 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 29 KB 👁 1 views

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v