Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Krzysztof Skowerski"'
Publikováno v:
ACS Omega, Vol 4, Iss 1, Pp 1831-1837 (2019)
Externí odkaz:
https://doaj.org/article/c06573f6775a41aa8657efba40e1198f
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
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 11, Iss 1, Pp 1823-1832 (2015)
Iodide-containing nitro-Grela-type catalysts have been synthesized and applied to ring closing metathesis (RCM) and cross metathesis (CM) reactions. These new catalysts have exhibited improved efficiency in the transformation of sterically, non-deman
Externí odkaz:
https://doaj.org/article/38d18619e33949b4b027e7a8b018637f
Autor:
Tomasz K. Olszewski, Krzysztof Skowerski, Andrzej Tracz, Katarzyna Kaczanowska, Rafał Gawin, Bartosz Trzaskowski, Aleksandra Peszczyńska
Publikováno v:
ChemCatChem. 12:6366-6374
Publikováno v:
Organic Process Research & Development. 24:125-145
This personal account describes the development and fine-tuning of pH-neutral quaternary-ammonium-tagged ruthenium-based complexes, their use as versatile catalysts for olefin metathesis, and the a...
Autor:
Daniel L. Nascimento, Piotr A. Guńka, Anna Gawin, Deryn E. Fogg, Janusz Zachara, Rafał Gawin, Krzysztof Skowerski
Publikováno v:
Journal of the American Chemical Society. 141:10626-10631
Access to leading olefin metathesis catalysts, including the Grubbs, Hoveyda, and Grela catalysts, ultimately rests on the nonscaleable transfer of a benzylidene ligand from an unstable, impure aryldiazomethane. The indenylidene ligand can be reliabl
Publikováno v:
ACS Omega, Vol 4, Iss 1, Pp 1831-1837 (2019)
ACS Omega
ACS Omega
A new protocol for ring-closing metathesis/isomerization sequence was developed. The reactions of selected dienes were performed in overheated 2-methyltetrahydrofuran at 120 °C and provided a wide range of cyclic vinyl ethers and amides with good yi
Autor:
Ewa Bulska, Katarzyna Kaczanowska, Krzysztof Skowerski, Michał Chwalba, Jakub Pastva, Martin Kubů, Anna Ruszczyńska, Hynek Balcar
Publikováno v:
Organometallics. 37:1837-1844
A Hoveyda-type catalyst decorated with two quaternary ammonium tags was synthesized and noncovalently grafted on SiO2, SBA-15, and on carboxyl graphene. A comparative study showed that the efficiency of the dual-anchored heterogeneous catalysts was h
Publikováno v:
New Journal of Chemistry. 42:8609-8614
Ruthenium-based catalysts bearing quaternary ammonium groups in their N-heterocyclic carbene (NHC) fragments and different counter-ions were synthesised and tested in various olefin metathesis transformations. Differences in catalytic activity in cor
Publikováno v:
Angewandte Chemie International Edition
Angewandte Chemie (International Ed. in English)
Angewandte Chemie (International Ed. in English)
Thestate-of-the-art in olefin metathesis is applicationof N-heterocycliccarbene (NHC)-containing ruthenium alkylidenes for the formationof internalC=C bonds and of cyclic alkyl amino carbene (CAAC)-containing rutheniumbenzylidenesin the production of