Mechanism of Meerwein arylation of furan derivatives |
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Authors: | N. D. Obushak A. I. Lesyuk Yu. I. Gorak V. S. Matiichuk |
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Affiliation: | 1. Ivan Franko Lviv National University, ul. Kirilla i Mefodiya 6, Lviv, 79005, Ukraine
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Abstract: | Catalytic arylation of furan-2-carbaldehyde with arenediazonium salts was studied. The yields of 5-arylfuran-2-carbaldehydes were found to depend on the solvent, catalyst, and anion in the arenediazonium salt. Redox catalysis and generation of aryl radicals are not sufficient conditions for the reaction to occur. The reaction is successful only under conditions ensuring formation of complex intermediates. A mechanism involving two Cu2+ ? Cu+ catalytic series and generation of furan-2-carbaldehyde was proposed. |
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