Phosphomolybdic acid-catalyzed efficient one-pot three-component aza-Diels-Alder reactions under solvent-free conditions: a facile synthesis of trans-fused pyrano- and furanotetrahydroquinolines |
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Authors: | K. Nagaiah D. Sreenu R. Srinivasa Rao G. Vashishta J.S. Yadav |
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Affiliation: | Division of Organic Chemistry, Indian Institute of Chemical Technology, Hyderabad 500007, India |
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Abstract: | trans-Fused pyrano- and furanotetrahydroquinoline derivatives have been synthesized via a one-pot three-component aza-Diels-Alder reaction of aryl imines formed in situ from aromatic amines and arylaldehydes with cyclic enol ethers,such as 3,4-dihydro-2H-pyran and 2,3-dihydrofuran,in the presence of 1 mol % of phosphomolybdic acid under solvent-free conditions at room temperature in good to excellent yields. |
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Keywords: | Arylimines Phosphomolybdic acid Aza-Diels-Alder reaction Solvent-free conditions Tetrahydroquinolines |
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