A convenient one-pot synthesis of pyrano [3, 2-c] quinolin-2, 5 (6H)-dione and 2H, 5H-pyrano [3, 2-c] chromene-2, 5-dione derivatives
H Sheibani, MH Mosslemin, S Behzadi, MR Islami…
Index: Sheibani, Hassan; Mosslemin, Mohammad Hossein; Behzadi, Soheila; Islami, Mohammad Reza; Saidi, Kazem Synthesis, 2006 , # 3 p. 435 - 438
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Citation Number: 25
Abstract
Abstract The preparation of novel pyrano [3, 2-c] quinolin-2, 5 (6H)-dione and 2H, 5H-pyrano [3, 2-c] chromene-2, 5-dione derivatives starting from 4-hydroxyquinolin-2 (1H)-ones and 4- hydroxy-2H-chromene-2-one with chlorocarbonyl ketenes is described. This method provides a new route to produce fused pyrano derivatives in good to excellent yields in a short experimental time.
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