Journal
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
Volume 9, Issue 5, Pages 757-765Publisher
SPRINGER
DOI: 10.1007/s13738-012-0092-5
Keywords
beta-Naphthol; Aldehydes; Poly(AMPS-co-AA); Cyclic 1; 3-Dicarbonyl compounds; Solvent-free
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Funding
- research council of Hakim Sabzevari University
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A simple, efficient, and environmentally benign route was developed for the preparation of 14-aryl or alkyl-14H-dibenzo[a,j]xanthene, 1,8-dioxo-octahydroxanthene and 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-ones from condensation of various aldehydes with (i) beta-naphthol, (ii) cyclic 1,3-dicarbonyl compounds and (iii) beta-naphthol and cyclic 1,3-dicarbonyl compounds, using novel polymeric catalyst [poly(AMPS-co-AA)] under solvent-free conditions. Use of easily available catalyst, shorter reaction times, better yields, simplicity of the reaction, heterogeneous system, and easy work-up are the advantages of the present method.
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