Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Stefan J. Czarnocki"'
Autor:
Łukasz Gułajski, Andrzej Tracz, Katarzyna Urbaniak, Stefan J. Czarnocki, Michał Bieniek, Tomasz K. Olszewski
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 15, Iss 1, Pp 160-166 (2019)
The influence of microwave and ultrasonic irradiation on the performance of ammonium-tagged Ru-based catalysts in olefin metathesis transformations in aqueous media was studied. Differences in the catalytic activity in correlation with the nature of
Externí odkaz:
https://doaj.org/article/d568fc6768aa498b8881468beaaf7636
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 12, Iss 1, Pp 5-15 (2016)
An ammonium-tagged ruthenium complex, 8, was deposited on several widely available commercial solid materials such as silica gel, alumina, cotton, filter paper, iron powder or palladium on carbon. The resulting catalysts were tested in toluene or eth
Externí odkaz:
https://doaj.org/article/6b146bd3d0da455aafc62bb6886113af
Autor:
Paweł Małecki, Karol Grela, Anna Kajetanowicz, Jolanta Pawłowska, Tomasz Nienałtowski, Dorota Czajkowska-Szczykowska, Stefan J. Czarnocki, Paweł Szczepanik
Publikováno v:
Chemistry – A European Journal. 26:15708-15717
A large-scale synthesis of known Ru olefin metathesis catalyst VII featuring an unsymmetrical N-heterocyclic carbene (NHC) ligand with one 2,5-diisopropylphenyl (DIPP) and one thiophenylmethylene N-substituent is reported. The optimised procedure doe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e15a8d40fe5789b5a9849893e25c08cd
https://doi.org/10.1002/chem.202003830
https://doi.org/10.1002/chem.202003830
Publikováno v:
Molecules
Molecules, Vol 26, Iss 5220, p 5220 (2021)
Volume 26
Issue 17
Molecules, Vol 26, Iss 5220, p 5220 (2021)
Volume 26
Issue 17
A modular and flexible strategy towards the synthesis of N-heterocyclic carbene (NHC) ligands bearing Brønsted base tags has been proposed and then adopted in the preparation of two tagged NHC ligands bearing rests of isonicotinic and 4-(dimethylami
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7377139a08e25ba4b1a3d45c1f2d09ba
https://pubmed.ncbi.nlm.nih.gov/34500654
https://pubmed.ncbi.nlm.nih.gov/34500654
Autor:
Michał Bieniek, Stefan J. Czarnocki, Tomasz K. Olszewski, Łukasz Gułajski, Andrzej Tracz, Katarzyna Urbaniak
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 15, Iss 1, Pp 160-166 (2019)
Beilstein Journal of Organic Chemistry
Beilstein Journal of Organic Chemistry
The influence of microwave and ultrasonic irradiation on the performance of ammonium-tagged Ru-based catalysts in olefin metathesis transformations in aqueous media was studied. Differences in the catalytic activity in correlation with the nature of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b13630cdacadd83c73c2e815c42b24df
https://doaj.org/article/d568fc6768aa498b8881468beaaf7636
https://doaj.org/article/d568fc6768aa498b8881468beaaf7636
Autor:
Krzysztof Woźniak, Nirmalya Mukherjee, Karol Grela, Maura Malinska, Stefan J. Czarnocki, Rafał Gawin, Anna Kajetanowicz, Roman Gajda
Publikováno v:
Journal of Organometallic Chemistry. 867:359-366
Reaction of commercial ruthenium complexes M31 and M20 with 2-nitrostyrene gave a new nitroso-chelated cyclic η1-acyl ruthenium(II) complexes Ru-4 and Ru-6 respectively instead of expected Hoveyda-Grubbs type (pre)catalyst Ru-3. New complexes were c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17eb87239f17e4d7b0269f6def97f338
https://doi.org/10.1016/j.jorganchem.2018.01.035
https://doi.org/10.1016/j.jorganchem.2018.01.035
Autor:
Karol Grela, Stefan J. Czarnocki, Tomasz K. Olszewski, Krzysztof Woźniak, Izabela Czeluśniak, Maura Malinska
Publikováno v:
ACS Catalysis. 7:4115-4121
Analogues of the well-known Hoveyda–Grubbs catalyst bearing both a chelating ester function and a chelating nitrogen atom were obtained. These complexes behave differently depending on the character of the chelating amine. Complexes containing a se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2ed9672953867a9278cacba177d1111
https://doi.org/10.1021/acscatal.7b00843
https://doi.org/10.1021/acscatal.7b00843
Publikováno v:
Organic Process Research & Development. 19:872-877
The ammonium tagged Hoveyda-type catalyst bearing sterically enlarged N-heterocyclic carbene ligand was synthesized and supported on SBA-15. The obtained heterogeneous olefin metathesis catalyst forms unprecedentedly stable Ru-methylidenes and provid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddf604bf59a362ca779d199ae150bbca
https://doi.org/10.1021/acs.oprd.5b00132
https://doi.org/10.1021/acs.oprd.5b00132
Autor:
Krzysztof Skowerski, Jakub Pastva, Naděžda Žilková, Hynek Balcar, Jiří Čejka, Zdeněk Bastl, Stefan J. Czarnocki
Publikováno v:
ACS Catalysis. 4:3227-3236
Ruthenium olefin metathesis catalysts bearing a polar quaternary ammonium group in N-heterocyclic ligand were immobilized on silica and siliceous mesoporous molecular sieves with different pore sizes (SBA-15 and MCM-41). The activity of the heterogen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc68bccd3ffeb0c18532c4798ae59e1f
https://doi.org/10.1021/cs500796u
https://doi.org/10.1021/cs500796u
Publikováno v:
ChemSusChem. 7:536-542
A tube-in-tube reactor was successfully applied in homo- and heterogeneous olefin metathesis reactions under continuous flow mode. It was shown that the efficient removal of ethylene facilitated by connection of the reactor with a vacuum pump signifi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c710b34930fb75b392e440f94bb7f27f
https://doi.org/10.1002/cssc.201300829
https://doi.org/10.1002/cssc.201300829