- Heteropoly acid catalysts in the valorization of the essential oils: Acetoxylation of β-caryophyllene
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H3PW12O40 (PW), the strongest heteropoly acid in the Keggin series, is an active and environmentally friendly catalyst for the liquid-phase conversion of β-caryophyllene (1) to β-caryolanyl acetate (2) in homogeneous and heterogeneous systems. An efficient and clean method for the synthesis of 2, providing a mixture containing two stereoisomeric β-caryolanyl acetates 2a and 2b, 2a/2b = 80/20 mol/mol, with 100% GC yield, has been developed using PW as a homogeneous catalyst under mild reaction conditions. The reaction occurs at 25 °C with a catalyst turnover number of 2000. The catalyst can be recovered without neutralization and reused without loss of activity and selectivity.
- Rocha, Kelly A. da Silva,Rodrigues, Nathália V.S.,Kozhevnikov, Ivan V.,Gusevskaya, Elena V.
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experimental part
p. 87 - 94
(2010/10/21)
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- Reactions of some terpenes and their derivatives with acylating agents in the presence of aluminosilicate catalysts
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Reactions of camphene, α-fenchene, limonene, caryophyllene, α- and β-pinenes, verbenol, walterol, and verbenone with acylating agents in the presence of clay K-10 and wide-porous β-zeolite were studied. Presumable schemes and rules of the occurring proces
- Volcho,Tatarova,Suslov,Korchagina,Salakhutdinov,Barkhash
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p. 1418 - 1429
(2007/10/03)
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