Microwave-assisted three-component reaction in conventional solvents and ionic liquids for the synthesis of amino-substituted imidazo[1,2-a]pyridines
- Publikations-Art
- Zeitschriftenbeitrag (peer-reviewed)
- Autoren
- Mert-Balci, F.; Conrad, J.; Beifuss, U.
- Erscheinungsjahr
- 2012
- Veröffentlicht in
- ARKIVOC
- DOI
- 10.3998/ark.5550190.0013.318
- Seite (von - bis)
- 243 - 256
3-Amino-substituted imidazo[1,2-a]pyridines can be prepd. with yields up to 98% within a few minutes by microwave-assisted three-component reaction between 2-aminopyridines, aldehydes and isocyanides using montmorillonite as the catalyst and toluene as the solvent. The org. solvent can be replaced by ionic liqs. With guanidinium salts the microwave-assisted reaction can be performed in the absence of any further catalyst.