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Updated: Jun 14, 2025

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
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Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions

Published on: July 30, 2017

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一个基于胺的Cu (II) 复合物催化了imidazo-[1,2-a]pyridines的选择性C-H硫化,使用CS作为硫源

Kingkar Ghosh1, Narendra Nath Ghosh2, Prasun Choudhury1

  • 1Department of Chemistry, University of North Bengal, Darjeeling 734013, India. debmayukh285@gmail.com.

Organic & biomolecular chemistry
|September 6, 2024
PubMed
概括

一种新型的铜 (II) 复合物利用二硫化碳 (CS2) 和各种化物促进了imidazo[1,2-a]pyridines的选择性硫化. 这种方法有效地合成了有价值的3 - 硫胺[1,2-a] 氨酸衍生物.

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Preparation and Reactions of Sulfides

Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
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Arenediazonium substitution reactions occur when the diazonium group is substituted by various functional groups such as halides, hydroxyl, nitrile, etc. For instance, arenediazonium salts react with copper(I) salts of chloride, bromide, or cyanide to form corresponding aryl chlorides, bromides, and nitriles. These reactions are named Sandmeyer reactions. Although the mechanism of this reaction is complicated, as illustrated in Figure 1, they are believed to progress via an aryl copper...
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