Synthesis of [1]Benzopyrano[3,4-c][2]benzazepine-6, 8, 13(7H)-triones |
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| Authors: | K. Rajendra Prasad Malleshwar Darbarwar |
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| Affiliation: | Department of Chemistry , Osmania University , Hyderabad, 500 007, India |
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| Abstract: | Hitherto unknown [1] benzopyrano [3,4-c] [2] benzazepine-6,8,13(7H)-triones (4a-e) have been synthesized by the intramolecular cyclodehydration of N-(2-oxo-2H-1-benzopyran-3-yl) phthalamic acids (3a-e) obtained by the reaction of 3-amino coumarins (1a-e) with phthalic anhydride (2) |
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