A rapid and efficient method for the synthesis of 14H-dibenzo[α.j] xanthenes, aryl-5H-dibenzo [b.i]xanthene-5,7,12,14-(13H)-tetraone and 1,8-dioxo-octahydroxanthenes by acidic ionic liquid
2010; Elsevier BV; Volume: 21; Issue: 7 Linguagem: Inglês
10.1016/j.cclet.2010.02.014
ISSN1878-5964
Autores Tópico(s)Synthesis of Organic Compounds
ResumoVarious xanthenes have been synthesized by the condensation of β-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 °C.
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