Microwave-Enhanced Greener Synthesis of Indazoles via Nitrenes

Autor: Deepu Varughese, Maghar S. Manhas, Ajay K. Bose
Rok vydání: 2007
Předmět:
Zdroj: ChemInform. 38
ISSN: 1522-2667
0931-7597
DOI: 10.1002/chin.200701120
Popis: Non-traditional methods (grinding, water-based biphasic reactions, microwave chemistry) were used for the preparation of Schiff bases from several amines and 2-nitrobenzaldehydes. These nitro compounds were allowed to react with triethyl phosphite under microwave irradiation for the generation of nitrenes that underwent insertion reactions to form indazoles. This procedure constitutes an energy-efficient, greener chemistry version of the Cadogan reaction for nitrene-based formation of nitrogen heterocycles.
Databáze: OpenAIRE