ChemInform Abstract: Fluoroboric Acid Adsorbed on Silica‐Gel‐Catalyzed Synthesis of 14‐Aryl‐14H‐dibenzo[a,j]xanthene Derivatives.

Abstract

Xanthene derivatives R 0360Fluoroboric Acid Adsorbed on Silica-Gel-Catalyzed Synthesis of 14-Aryl--14H-dibenzo[a,j]xanthene Derivatives. -The title compounds (III) (25 examples) are easily and efficiently obtained by the one-pot condensation of β-naphthol and various arylaldehydes under mild and solvent-free conditions. The inexpensive catalyst can be easily recovered and reused without loss of its catalytic activity. -(LIU, Y.-H.; TAO, X.-Y.; LEI, L.-Q.; ZHANG*, Z.-H.; Synth. Commun. 39 (2009) 4, 580-589; Coll. Chem. Mater. Sci., Hebei Norm. Univ., Shijiazhuang 050016, Peop. Rep. China; Eng.) -H. Toeppel 31-136