CERIUM (III) CHLORIDE CATALYZED EFFICIENT SYNTHESIS OF 1,8-DIOXO- OCTAHYDRO XANTHENE AND 12-ARYL (OR) 12-ALKYL-8,9,10,12-TETRAHYDROBENZO[A]XANTHENE-11-ONE DERIVATIVES.
G. Prabhakar,* D. Raju, M. Rajesh, B. Madhavarao
ABSTRACT
Cerium (III) chloride was found to be an efficient catalyst for the synthesis of 1, 8-dioxo-octahydroxanthene and 12-aryl- (or) 12-alkyl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-one derivatives in aq ethanol at reflux temperature. The present method offers several advantages like operational simplicity, easy work-up procedure, high yields.
Keywords: Xanthenes, CeCl3.7H2O, ?-Naphthol, Aldehydes, Dimedone.
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