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Regioselective Synthesis of 2H - Pyrano [3, 2-c] Benzopyran-5H-One and 3H-Pyrano [2, 3-c] Benzopyran-5H-ONE |
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| Authors: | K. C. Majumdar A. T. Khan R. N. De |
| Affiliation: | Department of Chemistry , University of Kalyani , Kaiyani, 741235, West Bengal, India |
| Abstract: | The hitherto unreported title compounds were obtained in good yields by [3, 3] sigmatropic rearrangement of 4 - [2-propynyloxy] coumarin and 3 - [2-propyny-loxy] coumarin respectively. |
| Keywords: | |