Kinetics of transesterification with various alkyl acetates for β-citronellyl acetate synthesis
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43932045" target="_blank" >RIV/60461373:22310/25:43932045 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/abs/pii/S2468823125004821" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S2468823125004821</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.mcat.2025.115293" target="_blank" >10.1016/j.mcat.2025.115293</a>
Alternative languages
Result language
angličtina
Original language name
Kinetics of transesterification with various alkyl acetates for β-citronellyl acetate synthesis
Original language description
β-Citronellyl acetate was synthesised by acid-catalyzed transesterification of β-citronellol with various alkyl acetates. p-Toluenesulfonic acid was chosen as the acid catalyst. We studied several effects on transesterification, and the most interesting effect was the structure of alkyl acetate. When linear acetates were used, transesterification was retarded with the length of the alkyl chain. Values of reaction rate constant were in the range from 0.273 to 0.180 l/mol/h at 50 °C with real selectivity. The situation was different for branched alkyl acetates. The behaviour of isobutyl acetate was similar to linear acetate (same value of the reaction constant). Isopropyl acetate reacted more slowly than we expected. When tert‑butyl acetate was used, the alkyl cleavage mechanism of generated undesired β-citronellyl tert‑butyl ether and only 67 % selectivity to β-citronellyl acetate was obtained. When methyl acetate was used, the activation energy (50 °C, presumed 100 % selectivity) was 48.9 kJ/mol. The contributions were approximately 2.5 kJ/mol per 1C and 23 kJ/mol per 1CH3. These findings provide valuable insights into the impact of alkyl acetate structure on transesterification efficiency and significant role on kinetics and selectivity. © 2025 Elsevier B.V.
Czech name
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Czech description
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Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Molecular Catalysis
ISSN
2468-8231
e-ISSN
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Volume of the periodical
584
Issue of the periodical within the volume
September 2025
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
15
Pages from-to
nestránkováno
UT code for WoS article
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EID of the result in the Scopus database
2-s2.0-105008513359