A Convenient Synthetic Approach to Newly Condensed Pyrazoloazines Based on Pyrazolo[3,4-b]pyridine
摘要:
AbstractThe reaction of 6‐amino‐5‐cyano‐3‐methyl‐1H‐1‐phenylpyrazolo[3,4‐b]pyridine (2) and 6,7‐dihydro‐3‐methyl‐6‐oxo‐1H‐1‐phenylpyrazolo[3,4‐b)]pyridine‐5‐carbonitrile (3) and 5‐amino‐3‐methyl‐1‐phenyl‐1H‐pyrazolo[3,4‐b]‐1H‐pyrazolo[4′,3′‐e]pyridine (12) with different reagents have been conducted to give newly condensed pyrazoloazines.
Synthesis of Newly Substituted Pyrazoles and Substituted Pyrazolo[3,4-<i>b</i>]Pyridines Based on 5-Amino-3-Methyl-1-Phenylpyrazole
作者:Talaat I. El-Emary
DOI:10.1002/jccs.200700072
日期:2007.4
10b was produced through reaction of 9 with acetophenone. Reaction of 1 with benzylidinemalononitrile afforded 11. New methods for preparation of 15 and 16 are described. The reaction of 8 with malononitrile, thio-semicarbazide, phenyl hydrazine and acetophenone afforded compounds 18-21. The reaction of 21 with malononitrile gave 22. Compounds 23-26 were produced upon reaction of 10a with malononitrile
A Convenient Synthetic Approach to Newly Condensed Pyrazoloazines Based on Pyrazolo[3,4-<i>b</i>]pyridine
作者:Talaat I. El-Emary
DOI:10.1002/jccs.199900080
日期:1999.8
AbstractThe reaction of 6‐amino‐5‐cyano‐3‐methyl‐1H‐1‐phenylpyrazolo[3,4‐b]pyridine (2) and 6,7‐dihydro‐3‐methyl‐6‐oxo‐1H‐1‐phenylpyrazolo[3,4‐b)]pyridine‐5‐carbonitrile (3) and 5‐amino‐3‐methyl‐1‐phenyl‐1H‐pyrazolo[3,4‐b]‐1H‐pyrazolo[4′,3′‐e]pyridine (12) with different reagents have been conducted to give newly condensed pyrazoloazines.