A rapid and efficient method for the synthesis of 14H-dibenzo[alpha.j] xanthenes, aryl-5H-dibenzo [b.i]xanthene-5,7,12,14-(13H)-tetraone and 1,8-dioxo-octahydroxanthenes by acidic ionic liquid

作者：Rahmati Abbas^*

来源：Chinese Chemical Letters, 2010, 21(7): 761-764.

DOI：10.1016/j.cclet.2010.02.014

• Ionic liquid
• 14H-Dibenzo[alpha,j]xanthenes
• beta-Naphthol
• 2-Hydroxynaphthalene-1,4-dione
• Dimedone

Various xanthenes have been synthesized by the condensation of beta-naphthol, 2-hydroxynaphthalene-1,4-dione or dimedone with various aldehydes in the presence of trifluoroacetic acid as catalyst in 1,1,3,3-N,N,N',N'-tetramethylguanidinium trifluoroacetate (TMGT) ionic liquid within 1 h at 75 degrees C.

• 出版日期2010-7