A facile approach for the synthesis of 14-aryl- or alkyl-14H-dibenzo[aj]xanthenes under solvent-free condition

作者：Kumar Ram; Nandi Ganesh Chandra; Verma Rajiv Kumar; Singh M S^*

来源：Tetrahedron Letters, 2010, 51(2): 442-445.

DOI：10.1016/j.tetlet.2009.11.064

• Dibenzoxanthene, 2-Naphthol
• Aldehydes
• P(2)O(5)
• InCl(3)
• Solvent-free conditions

A facile, efficient and environment-friendly protocol for the synthesis of 14-aryl- or alkyl-14H-dibenzo[aj]xanthenes has been developed by one-pot condensation of 2-naphthol with aliphatic and aromatic aldehydes in the presence of P(2)O(5) or InCl(3) as catalysts under solvent-free conditions. The present approach offers the advantages of clean reaction, simple methodology, short reaction time, high yield, easy purification, and economic availability of the catalyst.

• 出版日期2010-1-13