Journal
ADVANCED SYNTHESIS & CATALYSIS
Volume 347, Issue 4, Pages 555-562Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.200404239
Keywords
gamma-aldol reaction; enols; enones; nucleophilic addition; oxygen heterocycles
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The base-catalyzed condensation of alpha,beta-unsaturated carbonyl compounds with 2-hydroxybenzaldehydes yielding tetrahydroxanthones and dihydrobenzopyrans has been investigated. A novel access to highly functionalized dihydrobenzopyrans via a mild generation of the dienol of senecialdehyde and subsequent conjugated aldol reaction has been reported.
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