Articles with "asymmetric transfer" as a keyword



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Chiral metal-organic frameworks with tunable catalytic selectivity in asymmetric transfer hydrogenation reactions

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Published in 2020 at "Nano Research"

DOI: 10.1007/s12274-020-2905-7

Abstract: Metal-organic frameworks (MOFs) have achieved great success in the field of heterogeneous catalysis, however, it’s still challenging to design MOF catalysts with enhanced selectivity. Here, we demonstrated a combination strategy of metal design and ligand… read more here.

Keywords: metal; asymmetric transfer; transfer hydrogenation; metal organic ... See more keywords
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The chiral boronate-catalyzed asymmetric transfer hydrogenation of various aromatic ketones to high-value alcohols: Preparation and spectroscopic studies

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Published in 2019 at "Journal of Organometallic Chemistry"

DOI: 10.1016/j.jorganchem.2019.03.017

Abstract: Abstract This work deals with the synthesis, spectroscopic studies and catalytic evaluation of the novel chiral salen (L1H2) and (L2H2) ligands and their chiral boronate [L1(B1-4)] and [L2(B1-4)] complexes. Initially, the reaction of 5-azidomethyl salicylaldehyde… read more here.

Keywords: chiral boronate; transfer hydrogenation; asymmetric transfer; boronate ... See more keywords
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A substitution/dynamic kinetic resolution – Asymmetric transfer hydrogenation tandem process for preparation of stereocenters β-hydroxy sulfones

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Published in 2018 at "Molecular Catalysis"

DOI: 10.1016/j.mcat.2018.04.019

Abstract: Abstract A noval method for the synthesis of optically active β-hydroxy sulfones was developed. Through a substitution/dynamic kinetic resolution–asymmetric transfer hydrogenation, the presented method was based on one-pot enantioselective organic transformations of α–bromoindenones and sodium… read more here.

Keywords: resolution asymmetric; hydroxy sulfones; kinetic resolution; dynamic kinetic ... See more keywords
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Chiral salen - Ni (II) based spherical porous silica as platform for asymmetric transfer hydrogenation reaction and synthesis of potent drug intermediate montekulast

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Published in 2021 at "Molecular Catalysis"

DOI: 10.1016/j.mcat.2020.111367

Abstract: Abstract Heterogeneous catalyst has an edge over homogeneous systems in terms of recyclability, activity, stability and recovery. Silica has evolved as a good support material in heterogeneous systems due to its stability and ability to… read more here.

Keywords: silica; microscopy; spectroscopy; transfer hydrogenation ... See more keywords
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Boron containing chiral Schiff bases: Synthesis and catalytic activity in asymmetric transfer hydrogenation (ATH) of ketones

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Published in 2020 at "Journal of Molecular Structure"

DOI: 10.1016/j.molstruc.2019.127064

Abstract: Abstract Asymmetric Transfer Hydrogenation (ATH) has been an attractive way for the reduction of ketones to chiral alcohols. A great number of novel and valuable synthetic pathways have been achived by the combination usage of… read more here.

Keywords: asymmetric transfer; boron containing; transfer hydrogenation; hydrogenation ath ... See more keywords
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Mechanistic Complexity of Asymmetric Transfer Hydrogenation with Simple Mn–Diamine Catalysts

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Published in 2019 at "Organometallics"

DOI: 10.1021/acs.organomet.9b00457

Abstract: The catalytic asymmetric transfer hydrogenation (ATH) of ketones is a powerful methodology for the practical and efficient installation of chiral centers. Herein, we describe the synthesis, characterization, and catalytic application of a series of manganese… read more here.

Keywords: mechanistic complexity; diamine; asymmetric transfer; transfer hydrogenation ... See more keywords
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Asymmetric Transfer Hydrogenation of o-Hydroxyphenyl Ketones: Utilizing Directing Effects That Optimize the Asymmetric Synthesis of Challenging Alcohols.

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Published in 2020 at "Organic letters"

DOI: 10.1021/acs.orglett.0c01213

Abstract: A systematic range of o-hydroxyphenyl ketones were reduced under asymmetric transfer hydrogenation conditions using the C3-tethered catalyst 2. Two directing effects, i.e., an o-hydroxyphenyl coupled to a bulky aromatic on the opposite side of the… read more here.

Keywords: hydroxyphenyl ketones; directing effects; asymmetric transfer; transfer hydrogenation ... See more keywords
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Catalytic Asymmetric Transfer Hydrogenation of trans-Chalcone Derivatives Using BINOL-derived Boro-phosphates.

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Published in 2020 at "Organic letters"

DOI: 10.1021/acs.orglett.0c02042

Abstract: Chiral phosphoric-acid-catalyzed asymmetric reductions of trans-chalcones have been investigated in this work. A BINOL-derived boro-phosphate-catalyzed asymmetric transfer hydrogenation of the carbon-carbon double bond of trans-chalcone derivatives employing borane as a hydride source was realized. This… read more here.

Keywords: trans chalcone; chalcone derivatives; transfer hydrogenation; binol derived ... See more keywords
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Chiral Iridium Complexes of Anionic NCP Pincer Ligand for Asymmetric Transfer Hydrogenation of 1,1-Diarylethenes with Ethanol.

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Published in 2021 at "Organic letters"

DOI: 10.1021/acs.orglett.1c03455

Abstract: Chiral iridium complexes ligated by anionic oxazoline-bearing NCP-type pincer ligands were developed and applied to the asymmetric transfer hydrogenation (ATH) of diarylethenes using environmentally benign ethanol as the hydrogen donor. High enantioselectivities could be achieved… read more here.

Keywords: pincer; chiral iridium; transfer hydrogenation; asymmetric transfer ... See more keywords
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Photoresponsive Azobenzene-Functionalized Shell Cross-Linked Micelles for Selective Asymmetric Transfer Hydrogenation.

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Published in 2022 at "Organic letters"

DOI: 10.1021/acs.orglett.2c00925

Abstract: We describe the substrate-selective asymmetric transfer hydrogenation of aromatic ketones using rhodium complexes immobilized on a photoresponsive nanoreactor. The nanoreactor switches its morphology upon light irradiation in a wavelength-selective manner. Kinetic studies show that the… read more here.

Keywords: selective asymmetric; cross; transfer hydrogenation; asymmetric transfer ... See more keywords
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Bifunctional Oxo-Tethered Ruthenium Complex Catalyzed Asymmetric Transfer Hydrogenation of Aryl N-Heteroaryl Ketones.

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Published in 2017 at "Organic letters"

DOI: 10.1021/acs.orglett.7b00691

Abstract: A facile asymmetric transfer hydrogenation of ortho-substituted aryl N-heteroaryl ketones and non-ortho-substituted N-oxide of aryl N-heteroaryl ketones using a readily available oxo-tethered ruthenium complex as a catalyst and sodium formate as a hydrogen source in… read more here.

Keywords: heteroaryl ketones; transfer hydrogenation; asymmetric transfer; aryl heteroaryl ... See more keywords