Phosphorus, Sulfur and Silicon and the Related Elements p. 2357 - 2367 (2011)
Update date:2022-08-06
Topics:
Zhao, Xiaona
Miao, Zhiwei
Chen, Ruyu
An efficient, regioselective, palladium-catalyzed intramolecular cycloisomerization of dialkyl [(2-(2-ethynyl)phenyl)(2-hydroxyl)ethyl] phosphonate 6 is reported. The reactions proceed through a 6-endo-dig cyclization to afford 1H-isochromen-1-ylmethylphosphonates 7 in good to excellent yields using palladium(II) acetate as the catalyst in tetrahydrofuran at room temperature. Copyright Taylor & Francis Group, LLC.
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