Caro's Acid–Silica Gel–Catalyzed One-Pot Synthesis of 12-Aryl-8,9,10,12-tetrahydrobenzo[a] Xanthen-11-ones

Abstract

The synthesis of 12-aryl-8,9,10,12-tetrahydrobenzo[a] xanthen-11-ones from aldehyde, β-naphthol, AND dimedone in the presence of a catalytic amount of Caro's acid–silica gel in good yields under solvent-free conditions is reported.

Keywords:

• Aldehydes
• dimedone
• multicomponent reaction
• β-naphthol
• solvent-free
• xanthen

ACKNOWLEDGMENT

We are grateful to Azzahra University Research Council for partial support of this work.

Notes

^a Yields refer to the pure isolated products.

^a Yields refer to the pure isolated products.

^a All the products were characterized by comparison of spectroscopic data and melting points with those reported in the literature.

^b Yield refers to the pure isolated products.