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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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 %).

Název v anglickém jazyce

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

Popis výsledku anglicky

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 %).

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CC - Organická chemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Reaction Kinetics Mechanisms and Catalysis

ISSN

1878-5190

e-ISSN

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Svazek periodika

108

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

205-212

Kód UT WoS článku

000313370800018

EID výsledku v databázi Scopus

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