Process for preparing 1-methylindazole-3-carboxylic acid
The invention provides a process for preparing 1-methylindazole-3-carboxylic acid of formula (I): which comprises reacting a methylating agent with indazole-3-carboxylicacid of formula (VI): in the presence of an alkaline earth metal oxide or alkoxide in an appropriate solvent. Also provided is a pr...
Gespeichert in:
| Hauptverfasser: | , , , , |
|---|---|
| Format: | Patent |
| Sprache: | eng ; fre ; ger |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | The invention provides a process for preparing 1-methylindazole-3-carboxylic acid of formula (I):
which comprises reacting a methylating agent with indazole-3-carboxylicacid of formula (VI):
in the presence of an alkaline earth metal oxide or alkoxide in an appropriate solvent. Also provided is a process for producing Granisetron, using the method of the present invention for producing 1-methylindazole-3-carboxylic acid. |
|---|