Catalytic synthesis of 2,2′-arylmethylenebis(3-hydroxy-5,5-dimethylcyclohex-2-en-1-ones) and 3,3,6,6-tetramethyl-9-aryl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-diones
Autor: | Vladimir I. Potkin, O. P. Chepik, E. A. Dikusar, A. S. Pavlyuchenkova, R. M. Zolotar, A. P. Polikarpov, M. M. Ogorodnikova, Sergey K. Petkevich, M. Yu. Murashova, N. G. Kozlov, A. V. Kletskov |
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Rok vydání: | 2013 |
Předmět: | |
Zdroj: | Russian Journal of Organic Chemistry. 49:233-242 |
ISSN: | 1608-3393 1070-4280 |
DOI: | 10.1134/s1070428013020103 |
Popis: | Condensation of substituted benzaldehydes of vanillin series with dimedone in methanol solution in the presence of catalytic quantities of triethylamine afforded 2,2′-arylmethylenebis(3-hydroxy-5,5-dimethylcyclohex-2-en-1-ones. By catalytic cyclization of the latter in boiling benzene in the presence of sulfo cation exchanger FIBAN K-1 as catalyst 3,3,6,6-trimethyl-9-aryl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-diones were synthesized. |
Databáze: | OpenAIRE |
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