CAN-mediated Formation of Furopyranones and Furoquinolinones
摘要:
The reaction of 4-hydroxy-2H-pyran-2-one derivatives (1), (11), and (17) with a range of alkenes or phenylacetylene in acetonitrile containing cerium(IV) ammonium nitrate (CAN) afforded the corresponding furo[3,2-c]pyranone (4, 8, 13, 15, and 18) and/or furo[2,3-b]pyranone derivatives (6, 10, 14, 16, and 19). Similar treatment of 4-hydroxy-1-methylquinolin-2(1H)-one (2) with alkenes or phenylacetylene in the presence of CAN gave furo[3,2-c]quinolin-4(5H)-one derivatives (5) and (9).
The reaction of 4-hydroxy-2H-pyran-2-one derivatives (1), (11), and (17) with a range of alkenes or phenylacetylene in acetonitrile containing cerium(IV) ammonium nitrate (CAN) afforded the corresponding furo[3,2-c]pyranone (4, 8, 13, 15, and 18) and/or furo[2,3-b]pyranone derivatives (6, 10, 14, 16, and 19). Similar treatment of 4-hydroxy-1-methylquinolin-2(1H)-one (2) with alkenes or phenylacetylene in the presence of CAN gave furo[3,2-c]quinolin-4(5H)-one derivatives (5) and (9).