Novel Synthesis of 3,3-Bis-(4-chromone-3-ylmethyl)-chroman-4-ones

3-Hydroxymethylchromones have been found to undergo a novel transformation in the presence of Cs 2 CO 3 in toluene or xylene as solvent to afford "trimeric" chromones, 3,3-bis-(4-chromone-3-ylmethyl)-chroman-4-ones. The structure of the trimer has also been confirmed by single-crystal x-ra...

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Bibliographic Details
Published in:Synthetic communications 2013-08, Vol.43 (16), p.2165-2170
Main Authors: Devarajan, Krishnan, Balasubramanian, Kalpattu K., Bhagavathy, Shanmugasundaram
Format: Article
Language:English
Subjects:
3-hydroxymethylchromone
Benzochromones
chromones
trimerization
x-ray diffraction
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Summary:3-Hydroxymethylchromones have been found to undergo a novel transformation in the presence of Cs 2 CO 3 in toluene or xylene as solvent to afford "trimeric" chromones, 3,3-bis-(4-chromone-3-ylmethyl)-chroman-4-ones. The structure of the trimer has also been confirmed by single-crystal x-ray diffraction study. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications® to view the free supplemental file.
ISSN:0039-7911
1532-2432
DOI:10.1080/00397911.2012.691594