Low‐Temperature Nickel‐Catalyzed C−N Cross‐Coupling via Kinetic Resolution Enabled by a Bulky and Flexible Chiral
<i>N</i>
‐Heterocyclic Carbene Ligand
作者:Zi‐Chao Wang、Pei‐Pei Xie、Youjun Xu、Xin Hong、Shi‐Liang Shi
DOI:10.1002/anie.202103803
日期:2021.7.12
The transition-metal-catalyzed C−N cross-coupling has revolutionized the construction of amines. Despite the innovations of multiple generations of ligands to modulate the reactivity of the metal center, ligands for the low-temperature enantioselective amination of arylhalides remain a coveted target of catalyst engineering. Designs that promote one elementary reaction often create bottlenecks at
Synthesis of Sulfoximine-Derived P,N Ligands and their Applications in Asymmetric Quinoline Hydrogenations
作者:Sheng-Mei Lu、Carsten Bolm
DOI:10.1002/adsc.200800068
日期:2008.5.5
A series of naphthalene-bridged P,N-type sulfoximine ligands and their iridium complexes have been synthesized. They were applied in the enantioselective hydrogenation of quinoline derivatives, and enantioselectivities up to 92% ee have been achieved in the hydrogenation of 2-methylquinoline.
Brønsted acid differentiated metal catalysis by kinetic discrimination
作者:Magnus Rueping、René M. Koenigs
DOI:10.1039/c0cc02167a
日期:——
A Brønsted acid differentiated metal catalyzed hydrogenation has been developed. A combinatorial variation of chiral triflylamides with achiral metal complexes results in a highly active catalyst for the asymmetric reduction.
Deracemization of Phenyl-Substituted 2-Methyl-1,2,3,4-Tetrahydroquinolines by a Recombinant Monoamine Oxidase from <i>Pseudomonas monteilii</i>
ZMU-T01
A monoamineoxidase (MAO5) fromPseudomonasmonteilii ZMU‐T01 was first heterologously expressed in Escherichia coli BL21(DE3) and then used as a biocatalyst for the deracemization of racemic 2‐methyl‐1,2,3,4‐tetrahdroquinoline derivatives to yield the unreacted R enantiomer with up to >99 % ee. Sequence alignment revealed that MAO5 shared 14.7 % identity toward the well‐studied monoamineoxidase (MAO‐N)
Asymmetric Hydrogenation of Heteroaromatic Compounds Mediated by Iridium−(<i>P-OP</i>) Complexes
作者:José L. Núñez-Rico、Héctor Fernández-Pérez、J. Benet-Buchholz、Anton Vidal-Ferran
DOI:10.1021/om100955t
日期:2010.12.27
A library of modular iridium complexes derived from P-OP ligands has been evaluated in iridium-mediated asymmetrichydrogenations of heteroaromaticcompounds. The “lead” catalysts efficiently catalyzed the hydrogenation of several substituted quinolines and one quinoxaline (10 examples, up to 92% ee).