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
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