A novel one pot route to flavones under dual catalysis, an organo- and a Lewis acid catalyst

作者：Maiti Gourhari^*; Karmakar Rajiv; Bhattacharya Rudraksha N; Kayal Utpal

来源：Tetrahedron Letters, 2011, 52(43): 5610-5612.

DOI：10.1016/j.tetlet.2011.08.078

• Flavones
• One pot
• Dual catalysis
• Ferric chloride
• Aerial oxidation

Substituted phenylacetylenes react with various o-hydroxy aromatic aldehydes under dual catalysis of piperidine and FeCl3 in refluxing toluene to yield flavones in good to excellent yield. Atmospheric oxygen acts as stoichiometric oxidant in the process. Some of these compounds had been recently reported to show fair insecticidal activity against Spodoptera frugiperda.

• 出版日期2011-10-26