CeCl₃·7H₂O-Catalyzed Synthesis of 1-Oxo-hexahydroxanthene Derivatives in Aqueous Media

Abstract

Cerium(III) chloride heptahydrate (CeCl₃·7H₂O) catalyzes the reaction of substituted salicylaldehydes with 1,3-cyclohexane dione or dimedone in aqueous medium at reflux temperature to afford the corresponding 1-oxo-1,2,3,4,9,10-hexahydroxanthene derivatives4 0 in high yields.

Keywords:

• CeCl₃·7H₂O
• 1, 3-cyclohexane dione
• dimedone
• hexahydroxanthenes
• salicylaldehyde

ACKNOWLEDGMENT

K. S. thanks University Grants Commission, New Delhi, for the award of a fellowship.

Notes

^a All products were characterized by spectral data and compared with authentic samples.

^b Isolated pure products.