Catalytic Enantioselective Synthesis of 4-Amino-5-aryltetrahydro-1H-benzo[c]azepines by an Aminoarylation Reaction was written by Akhtar, Sk Samim Md;Hajra, Saumen. And the article was included in Synlett.Name: Copper(II) trifluoromethanesulfonate This article mentions the following:
A one-pot asym. aminoarylation reaction has been executed for the synthesis of trans-4-amino-5-aryltetrahydrobenzo[c]azepines with excellent diastereo- and enantioselectivity (dr > 99: 1; ee ≤97%). The reaction progresses through aziridination of prochiral N-tosyl-N-cinnamylbenzylamines, followed by an intramol. 7-endo-tet Friedel-Crafts cyclization of the tethered aziridines generated in situ, where the combination of Cu(OTf)2 as a catalyst and PhINNs as a nitrene source was found to be effective. A chiral indenyl bis(oxazoline) was shown to be an efficient ligand for the catalytic enantioselective version of this one-pot transformation. This 7-endo-tetcyclization is contrary to the Baldwin cyclization rules. In the experiment, the researchers used many compounds, for example, Copper(II) trifluoromethanesulfonate (cas: 34946-82-2Name: Copper(II) trifluoromethanesulfonate).
Copper(II) trifluoromethanesulfonate (cas: 34946-82-2) belongs to copper catalysts. Transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents belong to the most important cross-coupling reaction in organic synthesis. These ligands enable the reaction promoted in mild condition. The reaction scope has also been greatly expanded, rendering this copper-based cross-coupling attractive for both academia and industry. Name: Copper(II) trifluoromethanesulfonate
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”