Clean synthesis of 1,8-dioxo-dodecahydroxanthene derivatives catalyzed by polyaniline- p-toluenesulfonate salt in aqueous media

An efficient and straightforward procedure for the synthesis of 1,8-dioxo-dodecahydroxanthene was achieved through one-pot condensation of arylaldehyde and 1,3-cyclohexanedione in the presence of polyaniline- p-tolulenesulfonate salt as polymeric solid acid catalyst. For the first time it is demonst...

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Bibliographic Details
Published in:Journal of molecular catalysis. A, Chemical Chemical, 2006-04, Vol.248 (1), p.121-125
Main Authors: John, Amalraj, Yadav, Palamari Jaya Prakash, Palaniappan, Srinivasan
Format: Article
Language:English
Subjects:
Catalysis
Chemistry
Exact sciences and technology
General and physical chemistry
Polyaniline- p-toluenesulfonate salt
Reusable catalyst
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Xanthene
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Summary:An efficient and straightforward procedure for the synthesis of 1,8-dioxo-dodecahydroxanthene was achieved through one-pot condensation of arylaldehyde and 1,3-cyclohexanedione in the presence of polyaniline- p-tolulenesulfonate salt as polymeric solid acid catalyst. For the first time it is demonstrated that polyaniline salt could be used as catalyst in aqueous medium also. This method provides several advantages such as easy synthesis, simple work up, versatility, reusability. An efficient and straightforward procedure for the synthesis of 1,8-dioxo-dodecahydroxanthene was achieved through one-pot condensation of arylaldehyde and 1,3-cyclohexanedione in the presence of polyaniline- p-tolulenesulfonate salt as polymeric solid acid catalyst. ▪
ISSN:1381-1169
1873-314X
DOI:10.1016/j.molcata.2005.12.017