Efficient one-pot synthesis of 12-Aryl-8, 9, 10, 12-tetrahydrobenzo[a]xanthen-11-ones under solvent-free conditions
Xu-dong Jia , Song-yang Han , Hai-feng Duan , Ying-jie Lin , Jun-gang Cao , Da-peng Liang , Mao-cheng Wu
Chemical Research in Chinese Universities ›› 2013, Vol. 29 ›› Issue (1) : 82 -86.
Efficient one-pot synthesis of 12-Aryl-8, 9, 10, 12-tetrahydrobenzo[a]xanthen-11-ones under solvent-free conditions
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.
Aldehyde / Ionic liquid / ZrOCl2·8H2O / Multi-component reaction / Solvent-free condition
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