Intramolecular Hydroalkoxylation of Non-Activated C=C Bonds Catalysed by Zeolites: An Experimental and Theoretical Study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F13%3A10134297" target="_blank" >RIV/00216208:11310/13:10134297 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388955:_____/13:00392938

Výsledek na webu

<a href="http://dx.doi.org/10.1002/cssc.201300173" target="_blank" >http://dx.doi.org/10.1002/cssc.201300173</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/cssc.201300173" target="_blank" >10.1002/cssc.201300173</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Intramolecular Hydroalkoxylation of Non-Activated C=C Bonds Catalysed by Zeolites: An Experimental and Theoretical Study

Popis výsledku v původním jazyce

The high activity and selectivity of zeolites in the cyclisation of unsaturated alcohols is reported for the first time; the details of a reaction mechanism based on quantum chemical calculations are also provided. The high efficiency of zeolites MFI, BEA and FAU in the cyclisation of unsaturated alcohols (cis-decen-1- ol, 6-methylhept-5-en-2-ol and 2-allylphenol) to afford oxygencontaining heterocyclic rings is demonstrated. The best catalytic performance is found for zeolites with the optimum concentration of Bronsted acid sites (ca. 0.2 mmolg 1) and the minimum number of Lewis acid sites. It is proposed that the efficiency of the catalysts is reduced by the existence of the socalled dual site, at which a molecule of unsaturated alcohol can simultaneously interact with two acid sites (an OH group with one and the double bond with the other Bronsted site), which increases the interaction strength. The formation of such adsorption complexes leads to a decrease in the catalyst activity

Název v anglickém jazyce

Intramolecular Hydroalkoxylation of Non-Activated C=C Bonds Catalysed by Zeolites: An Experimental and Theoretical Study

Popis výsledku anglicky

The high activity and selectivity of zeolites in the cyclisation of unsaturated alcohols is reported for the first time; the details of a reaction mechanism based on quantum chemical calculations are also provided. The high efficiency of zeolites MFI, BEA and FAU in the cyclisation of unsaturated alcohols (cis-decen-1- ol, 6-methylhept-5-en-2-ol and 2-allylphenol) to afford oxygencontaining heterocyclic rings is demonstrated. The best catalytic performance is found for zeolites with the optimum concentration of Bronsted acid sites (ca. 0.2 mmolg 1) and the minimum number of Lewis acid sites. It is proposed that the efficiency of the catalysts is reduced by the existence of the socalled dual site, at which a molecule of unsaturated alcohol can simultaneously interact with two acid sites (an OH group with one and the double bond with the other Bronsted site), which increases the interaction strength. The formation of such adsorption complexes leads to a decrease in the catalyst activity

Druh

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

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GBP106%2F12%2FG015" target="_blank" >GBP106/12/G015: Vývoj nových nanoporézních adsorbentů a katalyzátorů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

ChemSusChem

ISSN

1864-5631

e-ISSN

—

Svazek periodika

6

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

10

Strana od-do

1021-1030

Kód UT WoS článku

000319828000012

EID výsledku v databázi Scopus

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