RhI, IrIII ,and CoIII Complexes with Atropchiral Biaryl Cyclopentadienyl Ligands: Syntheses, Structures, and Catalytic Activities was written by Duchemin, Coralie;Smits, Gints;Cramer, Nicolai. And the article was included in Organometallics in 2019.Name: Chlorobis(ethylene)iridium(I) dimer This article mentions the following:
Chiral cyclopentadienyl (Cpx) group 9 metal complexes have become versatile catalysts for a variety of efficient enantioselective C-H functionalizations. Atropchiral binaphthyl-derived Cpx ligands and their complexes I (M = Rh; L1L2 = COD, X absent; M = Co, L1, X = I, L2 = CO; M = 1/2 Ir, L1, X = I, L2 absent) having tuning options at the 3,3′-positions (R1 = halo, silyl, OMe; R2R3 = benzo or R2 = OMe, R3 = H) present a robust choice of catalyst, giving high enantioselectivities and good reactivities. Herein, we report streamlined syntheses of binaphthyl backbone Cpx ligands that feature new substituents at the 3,3′-positions: namely, trimethylsilyl, I, and Br. We introduce as well Cpx ligands with a new atropchiral MeO-biphenyl backbone. All ligands are smoothly complexed with rhodium(I) salts. The CpxRhI complexes obtained were systematically mapped by X-ray crystal anal. in order to collect steric parameters that might guide a rational selection of the chiral Cpx ligand for enantioselective reactions. The catalytic performances of the complexes were evaluated by two RhIII-catalyzed C-H functionalizations as benchmark transformations. In both cases, a simpler to access ligand provided superior reactivity and enantioselectivity. Addnl., related CpxCoIII and CpxIrIII complexes equipped with the developed ligands were prepared and characterized. In the experiment, the researchers used many compounds, for example, Chlorobis(ethylene)iridium(I) dimer (cas: 39722-81-1Name: Chlorobis(ethylene)iridium(I) dimer).
Chlorobis(ethylene)iridium(I) dimer (cas: 39722-81-1) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications.While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available. Alkyl chlorides readily undergo attack by nucleophiles.Name: Chlorobis(ethylene)iridium(I) dimer
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