Journal ArticleDOI
Imidazolylidenes, imidazolinylidenes and imidazolidines
Anthony J. Arduengo,Roland Krafczyk,Reinhard Schmutzler,Hugh A. Craig,Jens R. Goerlich,William J. Marshall,Markus Unverzagt +6 more
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TLDR
In this paper, 1,3-diarylimidazolinium chlorides were obtained in a three-step sequence via the diimines and ethylene diamine dihydrochlorides.About:
This article is published in Tetrahedron.The article was published on 1999-12-01. It has received 822 citations till now. The article focuses on the topics: Potassium hydride & Imidazolidines.read more
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N-heterocyclic carbenes: a new concept in organometallic catalysis.
TL;DR: N-Heterocyclic carbenes have become universal ligands in organometallic and inorganic coordination chemistry as mentioned in this paper, and they not only bind to any transition metal, be it in low or high oxidation states, but also to main group elements such as beryllium, sulfur, and iodine.
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Heterocyclic Carbenes: Synthesis and Coordination Chemistry
TL;DR: New methods for the synthesis of complexes with N-heterocyclic carbene ligands such as the oxidative addition or the metal atom template controlled cyclized isocyanides have been developed recently.
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Ruthenium-based heterocyclic carbene-coordinated olefin metathesis catalysts.
TL;DR: The fascinating story of olefin (or alkene) metathesis began almost five decades ago, when Anderson and Merckling reported the first carbon-carbon double-bond rearrangement reaction in the titanium-catalyzed polymerization of norbornene.
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Palladium Complexes of N-Heterocyclic Carbenes as Catalysts for Cross-Coupling Reactions—A Synthetic Chemist's Perspective
TL;DR: The basics of Pd-NHC chemistry are discussed to understand the peculiarities of these catalysts and a critical discussion on their application in C-C and C-N cross-coupling as well as carbopalladation reactions is given.
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Purification of laboratory chemicals
TL;DR: Common physical techniques used in purification chemical methods used in Purification purification of organic chemicals Purification of inorganic and metal organic chemicals general methods for the purification classification of classes of compounds and natural products biochemicals and related products as mentioned in this paper.
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Electronic stabilization of nucleophilic carbenes
TL;DR: In this paper, the remarkable ability of the imidazole nucleus to stabilize a carbene center at the C-2 position is demonstrated by the isolation of 1,3,4,5-tetramethylimidazol-2-ylidene.
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Olefin Metathesis-Active Ruthenium Complexes Bearing a Nucleophilic Carbene Ligand
TL;DR: In this article, a single-crystal X-ray diffraction study has been performed on 6.5-C5Me5-RuCl2(C(H)Ph)(PCy3)2 (1) and the carbene ligand 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes)Cl (3) in 86% isolated yield, where the thermochemical information is used to predict the magnitude of the enthalpic driving force behind substitution reactions
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Synthesis of Imidazol-2-ylidenes by Reduction of Imidazole-2(3H)-thiones
Norbert Kuhn,Thomas Kratz +1 more
TL;DR: 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 yields
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