Rearrangements of N-alkyl-/aryl-nitrones derived from 4-oxo-4H-1-benzopyran-3-carboxaldehyde--a solvent-dependent process |
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| Authors: | Tarun Ghosh |
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| Affiliation: | Department of Chemistry, R.K. Mission Vivekananda Centenary College, Rahara, Kolkata 700 118, West Bengal, India |
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| Abstract: | C-(4-Oxo-4H-1-benzopyran-3-yl)-N-alkyl-/aryl-nitrones derived from 4-oxo-4H-1-benzopyran-3-carboxaldehyde, rearrange to 2-alkyl-/aryl-amino-3-formylchromone and/or 3-(alkyl-/aryl-aminomethylene)chroman-2,4-dione depending upon the reaction medium. 3-(Alkylaminomethylene)chroman-2,4-dione has been utilized in the synthesis of 1-benzopyrano[3,4-d]isoxazole-4-one. |
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| Keywords: | Rearrangement Nitrone Solvent effect 3-Formylchromone 1-Benzopyran |
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