Acid functionalized MCM-41 as a catalyst for synthesis of benzal- 1,1-diacetate

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F13%3A43894017" target="_blank" >RIV/60461373:22310/13:43894017 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Acid functionalized MCM-41 as a catalyst for synthesis of benzal- 1,1-diacetate
Original language description
Solid acid catalysts for the formation of benzal-1,1-diacetate from benzaldehyde and acetic anhydride were prepared. As a catalyst, four various types of MCM-41 were used. The first was MCM-41 without prior rehydration of its surface, then with hydroxylated surface. The others were functionalized by two commercially available silanol agents; 3-mercaptopropyl and 3-cyanopropyl silane and subsequently oxidized to the corresponding acids. The cyano group was oxidized to carboxylic acid and the mercapto group to sulfonic acid. The use of these catalysts has many advantages e.g. these catalysts are environmentally friendly, recyclable, easily separable from the reaction mixture and the reaction is very fast and chemoselective. Using MCM-41 functionalized bycarboxyl groups as a catalyst, benzal-1,1-diacetate was obtained in high yield (87 %) and high selektivity (99 %).
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CC - Organic chemistry
OECD FORD branch
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Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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