Citation: Ebrahim Soleimani Mohammad Mehdi Khodaei, Afsaneh Taheri Kal Koshvandi. The efficient synthesis of 14-alkyl or aryl 14H-dibenzo[a,j]xanthenes catalyzed by bismuth(Ⅲ) chloride under solvent-free condition[J]. Chinese Chemical Letters, ;2011, 22(8): 927-930. doi: 10.1016/j.cclet.2011.01.012
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An efficient method for the synthesis of 14-alkyl or aryl 14H-dibenzo[a j]xanthene derivatives by the reaction of β-naphthol, and aldehydes in the presence of a catalytic amount of bismuth(Ⅲ) chloride (BiCl3) under solvent-free conditions at 110℃ is described. Aliphatic and aromatic aldehydes were used in the reaction and in all cases the desired products were synthesized successfully. This reaction was studied under different temperatures; the maximum yield was obtained in a short reaction period at 110℃. The method offers the advantages of high yields, short reaction times, simplicity and easy workup compared to the conventional method of syntheses.
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Keywords:
- Bismuth(Ⅲ) chloride,
- 14H-Dibenzo[a,j]xanthenes,
- β-Naphthol
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