Chemical Research in Chinese Universities ›› 2013, Vol. 29 ›› Issue (1): 82-86.doi: 10.1007/s40242-013-0001-1

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Efficient One-pot Synthesis of 12-Aryl-8, 9, 10, 12- tetrahydrobenzo[a]xanthen-11-ones Under Solvent-free Conditions

JIA Xu-dong, HAN Song-yang, DUAN Hai-feng, LIN Ying-jie, CAO Jun-gang, LIANG Da-peng, WU Mao-cheng   

  1. Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
  • Received:2011-12-07 Revised:2012-02-26 Online:2013-02-01 Published:2013-01-23

Abstract:

Multi-component condensation of 2-naphthol, aromatic aldehydes, and cyclic 1,3-dicarbonyl compounds catalyzed by ionic liquid [NSPTEA][HSO4] was accomplished for the synthesis of a series of 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-ones under solvent-free conditions. High yields, ease recovery, short reaction time and reusability of catalyst are significant advantages. ZrOCl2·8H2O was also found to act as an effective catalyst towards this transformation.

Key words: Aldehyde, Ionic liquid, ZrOCl2·8H2O, Multi-component reaction, Solvent-free condition