Journal
SYNTHETIC COMMUNICATIONS
Volume 39, Issue 4, Pages 580-589Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00397910802412842
Keywords
Aldehyde; HBF4-SiO2; heterogeneous catalyst; -naphthol; solvent-free conditions; xanthene
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Funding
- Hebei Normal University [L20061314]
- Nature Science Foundation of Hebei Province [B2008000149]
- Natural Science Foundation of Hebei Education Department [2006318]
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A simple and efficient procedure has been developed for the preparation of 14-aryl-14H-dibenzo[a,j]xanthene derivatives using fluoroboric acid adsorbed on silica gel as a heterogeneous catalyst. The methodology involves the one-pot condensation reaction of -naphthol and aryl aldehydes under solvent-free conventional heating conditions. The present approach offers several advantages such as shorter reaction times, simple work-up, excellent yields, low cost, and mild reaction conditions. The catalyst is easily recoverable and reusable without loss of its catalytic activity.
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