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Metal-catalyzed cascade rearrangements of 3-alkynyl flavone ethers.
Organic letters 2013 Apr 19Sizes of these terms reflect their relevance to your search.
Metal-mediated rearrangements of 3-alkynyl flavone ethers are reported. The overall process involves 5-endo enyne cyclization to a platinum-containing spiro-oxocarbenium intermediate which may be trapped with methanol to produce spirodihydrofurans or further rearranged to afford either allenyl chromanediones or benzofuranones.
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Yuan Xiong, Scott E Schaus, John A Porco. Metal-catalyzed cascade rearrangements of 3-alkynyl flavone ethers. Organic letters. 2013 Apr 19;15(8):1962-5
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PMID: 23574045
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