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Efficient synthesis of 14-substituted-14-H-dibenzo[a,j]xanthenes using silica supported sodium hydrogen sulfate or amberlyst-15 catalyst

✍ Scribed by Chebolu Naga Sesha Sai Pavan Kumar; Chiguru Srinivas; Partha Sarathi Sadhu; Vaidya Jayathirtha Rao; Srinivasan Palaniappan

Publisher: Journal of Heterocyclic Chemistry
Year: 2009
Tongue: English
Weight: 56 KB
Volume: 46
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.151

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✦ Synopsis

Abstract

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Silica supported sodium hydrogen sulfate (NaHSO~4~·SiO~2~) or amberlyst‐15 acts as an efficient heterogeneous catalyst for the preparation of 14‐alkyl and aryl‐14‐H‐dibenzo[a,j]xanthenes with various aldehydes and β‐naphthol in dichloroethane solvent in excellent yields. Synthesis of three new compounds are reported using this methodology. Recyclable nature of the amberlyst‐15 catalyst was also studied and the catalyst can be reused. J. Heterocyclic Chem., (2009).

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