Content deleted Content added
M97uzivatel (talk | contribs) →Ruthenium catalysis: duble link |
M97uzivatel (talk | contribs) |
||
Line 109:
== Silver catalysis==
Recently, the discovery of a general Ag(I)-catalyzed azide–alkyne cycloaddition reaction (Ag-AAC) leading to 1,4-triazoles is reported. Mechanistic features are similar to the generally accepted mechanism of the copper(I)-catalyzed process. Silver(I)-salts alone are not sufficient to promote the cycloaddition. However the ligated Ag(I) source has proven to be exceptional for AgAAC reaction.<ref>{{cite journal |author1=McNulty, J. |author2=Keskar, K |author3=Vemula, R. | title = The First Well-Defined Silver(I)-Complex-Catalyzed Cycloaddition of Azides onto Terminal Alkynes at Room Temperature | year = 2011 | journal = [[Chemistry: A European Journal]] | volume = 17 | issue = 52 | pages = 14727–14730 | doi = 10.1002/chem.201103244 | pmid= 22125272}}</ref><ref>{{cite journal |author1=McNulty, J. |author2=Keskar, K. | title = Discovery of a Robust and Efficient Homogeneous Silver(I) Catalyst for the Cycloaddition of Azides onto Terminal Alkynes | year = 2012 | journal = [[Eur. J. Org. Chem.]] | doi = 10.1002/ejoc.201200930 | volume=2012 | pages=5462–5470}}</ref>
Curiously, pre-formed silver acetylides do not react with azides; however, silver acetylides do react with azides under catalysis with copper(I).<ref>{{cite journal | authors = Proietti Silvestri, I., Andemarian, F., Khairallah, G.N., Yap, S., Quach, T., Tsegay, S., Williams, C.M., O'Hair, R.A.J., Donnelly, P.S., Williams, S.J.| title = Copper(i)-catalyzed cycloaddition of silver acetylides and azides: Incorporation of volatile acetylenes into the triazole core | year = 2011 | journal = [[Organic and Biomolecular Chemistry]] | volume = 9 | issue = 17 | pages = 6082–6088 | doi = 10.1039/c1ob05360d | pmid= 21748192}}</ref>▼
▲{{cite journal | authors = Proietti Silvestri, I., Andemarian, F., Khairallah, G.N., Yap, S., Quach, T., Tsegay, S., Williams, C.M., O'Hair, R.A.J., Donnelly, P.S., Williams, S.J.| title = Copper(i)-catalyzed cycloaddition of silver acetylides and azides: Incorporation of volatile acetylenes into the triazole core | year = 2011 | journal = [[Organic and Biomolecular Chemistry]] | volume = 9 | issue = 17 | pages = 6082–6088 | doi = 10.1039/c1ob05360d | pmid= 21748192}}
==References==
| |||