Because it is less expensive than other expensive transition metals (TM), has great selectivity and stability, and is ecologically friendly, silver is a key catalyst in organic synthesis. These metal-catalyzed cycloaddition processes, which are essential tools in synthetic chemistry, include a subset of silver-catalyzed reactions. Azomethine ylides are nitrogen-based 1,3-dipoles that are shown as the most prevalent resonance form with an iminium ion and a carbon-centered anion adjacent to it. Huisgen's 1,3-dipolar cycloaddition of terminal alkynes with azides often needs high temperatures of up to 100 °C and yields a mixture of 1,4- and 1,5-disubstituted triazole isomers. Metal ions are cross-linked by dicyanamide in a spiral chain to form silver dicyanamide, a polymeric structure. Azolomethine imine was also used to illustrate the silver-catalyzed cycloaddition.
Stanislaw Dzwigaj
Sorbonne University, France
Thomas J Webster
Brown University, United States
Dai Yeun Jeong
Asia Climate Change Education Center, Korea, Republic of
Sergey Suchkov
N.D. Zelinskii Institute for Organic Chemistry of the Russian Academy of Sciences, Russian Federation
Jiri Dedecek
J Heyrovsky Institute of Physical Chemistry , Czech Republic
Vladimir G Chigrinov
Hong Kong University of Science and Technology, Russian Federation
Osman Adiguzel
Firat University, Turkey
Uday Som
Shizuoka University, Japan
Rabeharitsara Andry Tahina
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