Preparation of Spiro[Benzopyran-Isoxazoles] from the Condensation–Cyclization of Oxime 1,4-Dianions with Select Coumarins von Metz, Clyde R., Radke, Jennifer L., Shuler, William G., Celli, Marco Gattoni, McMillen, Colin D., Pennington, William T., Beam, Charles F.

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