Journal ArticleDOI
Synthesis of Imidazol-2-ylidenes by Reduction of Imidazole-2(3H)-thiones
Norbert Kuhn,Thomas Kratz +1 more
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In this article, an improved synthesis of the title compounds was reported, and the N,N'-dialkylthioureas 1 with 3-hydroxy-2-butanone gave the imidazole-2(3H)-thiones 2 which on treatment with potassium in boiling tetrahydrofuran give the IMidazol-2ylidenes 3 in excellent yieldsAbstract:
An improved synthesis of the title compounds is reported. Reaction of the N,N'-dialkylthioureas 1 with 3-hydroxy-2-butanone gives the imidazole-2(3H)-thiones 2 which on treatment with potassium in boiling tetrahydrofuran give the imidazol-2-ylidenes 3 in excellent yieldsread more
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Book ChapterDOI
Olefin metathesis with ruthenium-arene catalysts bearing n-heterocyclic carbene ligands
Lionel Delaude,Albert Demonceau +1 more
TL;DR: In this paper, the authors investigated the ring-opening metathesis polymerization (ROMP) of cyclooctene catalyzed by various ruthenium (Ru)-arene complexes bearing imidazolin-2-ylidene, imida-zolidin-2 -ylide, or triazolin 5-ylide ligands and concluded that the presence of an endocyclic double bond in the carbene ligand central heterocycle was not crucial to achieve high catalytic efficiencies.
Journal ArticleDOI
NHC and NHC Complex Synthesis by Chloronium Ion Abstraction from 2‐Chloroazolium Salts Using Electron‐Rich Phosphines
Matthias Böhme,Tobias Eder,Maike B. Röthel,Patrick D. Dutschke,Lukas F. B. Wilm,Ekkehardt Hahn,Fabian Dielmann +6 more
TL;DR: In this paper , the Synthese von NHC-Komplexen durch in-situ-Chloroniumabstraktion of 2Chlorazoliumsalzen was eingesetzt.