Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn¡¯t involve a screen. 1038-95-5, C21H21P. A document type is Article, introducing its new discovery., Application In Synthesis of Tri-p-tolylphosphine
Synthesis and Application of Planar Chiral Cyclic (Amino)(ferrocenyl)carbene Ligands Bearing FeCp? Group
New cyclic (amino)(ferrocenyl)carbene (CAFeC) ligands containing the Cp? group have been developed as a modification of their prototype Cp version. The generation of the new carbenes was indirectly confirmed by trapping experiments in which a carbene precursor was reacted with sulfur or [IrCl(cod)]2 in the presence of a base. The electronic properties of the new CAFeCs were evaluated by determining the Tolman electronic parameter (TEP) of the Ir dicarbonyl complex [IrCl(CO)2(CAFeC)] that was synthesized via [IrCl(cod)(CAFeC)]. It was revealed that the donor strengths of the new CAFeCs were very high and comparable to those of cyclic (amino)(alkyl)carbenes (CAACs). The influence of the steric effect on the enantioselectivity by changing Cp to the Cp? group of CAFeCs was confirmed to be significant in an Ir-catalyzed asymmetric transfer hydrogenation of cyclic N-sulfonylimine where CAFeCs were used as chiral ligands.
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Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate