Epoxidation of the products of codimerization of cyclopentadiene and cyclohexadiene hydrocarbons catalyzed by lanthanide-molybdenum polyoxometalates
Autor: | M. B. Almardanova, N. I. Garibov, A. D. Kuliev, Kh. M. Alimardanov, O. A. Sadygov, N. R. Dadashova |
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Rok vydání: | 2015 |
Předmět: | |
Zdroj: | Russian Journal of General Chemistry. 85:1025-1033 |
ISSN: | 1608-3350 1070-3632 |
Popis: | [4+2]-Codimerization of cyclohexa-1,3-diene, cyclopentadiene, and their methyl-substituted derivatives in the presence of H-forms of synthetic mordenite and natural clinoptilolite was studied. Application of zeolites as catalyst decreases the rate of di- and trimerization of cyclopentadiene and its methyl-substituted derivatives, increases the reaction selectivity with respect to their codimers with cyclohexa-1,3-diene and its methylsubstituted derivatives as well as 4-vinylcyclohexene. Epoxidation of the synthesized codimers with the adduct of hydrogen peroxide with urea in the presence of gadolinium- and neodymium-containing phosphorus molybdenum complexes as catalysts has been investigated, and optimal conditions for preparation of diepoxides of tricyclic dienes have been found. |
Databáze: | OpenAIRE |
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