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Synthesis of Imidazol-2-ylidenes by Reduction of Imidazole-2(3H)-thiones
Norbert Kuhn,Thomas Kratz +1 more
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TLDR
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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Dioxomolybdenum(VI) complexes containing N-heterocyclic carbenes
TL;DR: In this article, a compound MoO2Cl2(THF)2 reacts with two equivalents of 1,3-dialkyl substituted 4,5-dimethylimidazol-2-ylidenes to give the dioxomolybdenum(VI) complexes MoO 2Cl2CL2(LR)2 [R = Me (1), i-Pr (2), i − 1,1,2, i − 2] and MoO O2Cl 2(C1Ln-Bu) (3,4,
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N-Heterocyclic carbenes: Advances in transition metal and organic catalysis
Rohit Singh,Steven P. Nolan +1 more
TL;DR: The use of N-heterocyclic carbenes (NHCs) in organic and transition metal chemistry is reviewed in this article, where the authors present the developments that have occurred in the last 12 months.
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To Rearrange or not to Rearrange: Reactivity of NHCs towards Chloro- and Hydrostannanes R2SnCl2 (R = Me, Ph) and Ph3SnH
TL;DR: The reaction of 1,3-diisopropylimidazolin-2-ylidene (iPr2Im) with diphenyldichlorostannane and dimethyldehydric acid (DDE) was reported in this paper.
Journal ArticleDOI
Reactions of Li/Cl Phosphinidenoid Complexes with 1,3,4,5-Tetramethylimidazol-2-ylidene: A New Route to N-Heterocyclic Carbene Adducts of Terminal Phosphinidene Complexes and an Unprecedented Transformation of an Oxaphosphirane Complex
TL;DR: In this article, the first evidence for the formation of a C-Cl imidazolium cation was presented and the first example of a formal exchange at the phosphorus center of an oxaphosphirane complex was demonstrated.