Heavy fluorous phosphine-free ruthenium catalysts for alkene metathesis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F14%3A00429494" target="_blank" >RIV/61388963:_____/14:00429494 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/14:43897762

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jfluchem.2014.03.003" target="_blank" >http://dx.doi.org/10.1016/j.jfluchem.2014.03.003</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jfluchem.2014.03.003" target="_blank" >10.1016/j.jfluchem.2014.03.003</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Heavy fluorous phosphine-free ruthenium catalysts for alkene metathesis

Popis výsledku v původním jazyce

Second generation Grubbs catalyst was modified stepwise with perfluoroalkylated isopropoxystyrene and two perfluoroalkanoate or perfluoropolyoxaalkanoate ligands to afford heavy fluorous phosphine-free ruthenium complexes, which displayed high activity in model ring-closing metathesis reactions. Surprisingly, substitution with linear perfluoropolyether chains led to the complexes of higher activity and fluorophilicity compared to perfluoroalkyl chains, while the use of branched perfluoropolyether ponytails resulted in significantly inferior activity probably due to increased steric hindrance around the active ruthenium centre. Similar reactivity pattern with slightly lower activity was observed for the second generation Hoveyda-Grubbs catalysts bearingperfluoroalkanoate or perfluoropolyoxaalkanoate groups and non-fluorinated isopropoxybenzylidene ligand. Depending on the reaction system, unactivated precatalysts can be recycled by heavy fluorous extraction with perfluoro(methylcyclohe

Název v anglickém jazyce

Heavy fluorous phosphine-free ruthenium catalysts for alkene metathesis

Popis výsledku anglicky

Second generation Grubbs catalyst was modified stepwise with perfluoroalkylated isopropoxystyrene and two perfluoroalkanoate or perfluoropolyoxaalkanoate ligands to afford heavy fluorous phosphine-free ruthenium complexes, which displayed high activity in model ring-closing metathesis reactions. Surprisingly, substitution with linear perfluoropolyether chains led to the complexes of higher activity and fluorophilicity compared to perfluoroalkyl chains, while the use of branched perfluoropolyether ponytails resulted in significantly inferior activity probably due to increased steric hindrance around the active ruthenium centre. Similar reactivity pattern with slightly lower activity was observed for the second generation Hoveyda-Grubbs catalysts bearingperfluoroalkanoate or perfluoropolyoxaalkanoate groups and non-fluorinated isopropoxybenzylidene ligand. Depending on the reaction system, unactivated precatalysts can be recycled by heavy fluorous extraction with perfluoro(methylcyclohe

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

<a href="/cs/project/GAP207%2F10%2F1533" target="_blank" >GAP207/10/1533: Fluorové karbeny, komplexy a iontové kapaliny na bázi perfluorpolyethery substituovaných imidazoliových solí a jejich aplikace</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Journal of Fluorine Chemistry

ISSN

0022-1139

e-ISSN

—

Svazek periodika

161

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

10

Strana od-do

66-75

Kód UT WoS článku

000336188600010

EID výsledku v databázi Scopus

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