Efficient C-3 reductive alkylation of 4-hydroxycoumarin by dehydrogenative oxidation of benzylic alcohols through ruthenium catalysis?
New Journal of Chemistry Pub Date: 2014-02-12 DOI: 10.1039/C3NJ01517C
Abstract
A practical route to prepare 4-hydroxycoumarin derivatives functionalized at the C-3 position is described through a catalytic coupling reaction between 4-hydroxycoumarin and a series of substituted benzylic alcohols. The reaction is conducted in the presence of tris(triphenylphosphine)ruthenium(II) dichloride (5 mol%), KOH (0.2 eq.) in tertamyl alcohol under microwave irradiation at 140 °C for 2 hours.
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Journal Name：New Journal of Chemistry
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CAS no.: 89640-58-4
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