ChemInform Abstract: Design of Supramolecular Chiral Ligands for Asymmetric Metal Catalysis

ChemInform ◽  
2015 ◽  
Vol 46 (23) ◽  
pp. no-no
Author(s):  
Kohsuke Ohmatsu ◽  
Takashi Ooi
Keyword(s):  
Chiral Ligands ◽  
Metal Catalysis

Asymmetric desymmetrization of alkene-, alkyne- and allene-tethered cyclohexadienones using transition metal catalysis

2021 ◽  
Author(s):  
Tao Shu ◽  
Janine Cossy
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
Transition Metal Catalysis ◽  
Chiral Ligands ◽  
Domino Reactions ◽  
Metal Catalysis ◽  
Catalytic Asymmetric

This review is covering the recent development of catalytic asymmetric domino reactions for the desymmetrization of alkene-, alkyne- and allene-tethered cyclohexadienones using transition metals and chiral ligands.

scholarly journals 1-Benzyl-2-(thien-2-yl)-4,5-dihydro-1H-imidazole

Molbank ◽  
10.3390/m1137 ◽  
2020 ◽  
Vol 2020 (2) ◽  
pp. M1137
Author(s):  
Alexandra S. Golubenkova ◽  
Nikita E. Golantsov ◽  
Alexey A. Festa ◽  
Leonid G. Voskressensky
Keyword(s):  
Organic Compounds ◽  
Title Compound ◽  
Chiral Ligands ◽  
Imidazoline Receptors ◽  
Metal Catalysis ◽  
Synthetic Intermediates

Imidazolines are a valuable class of organic compounds, namely ligands of imidazoline receptors, chiral ligands for metal catalysis, synthetic intermediates. The title compound has been prepared through a modified procedure, employing N-benzylethylenediamine and thiophene-2-carbaldehyde under the action of N-bromosuccinimide (NBS) in dichloromethane (DCM) in a good 78% yield.

scholarly journals Design of supramolecular chiral ligands for asymmetric metal catalysis

2015 ◽  
Vol 56 (16) ◽  
pp. 2043-2048 ◽  
Author(s):  
Kohsuke Ohmatsu ◽  
Takashi Ooi
Keyword(s):  
Chiral Ligands ◽  
Metal Catalysis

Synthesis of Axially Chiral 2,2’-Bisphosphobiarenes via a Nickel-Catalyzed Asymmetric Ullmann Coupling: General Access to Privileged Chiral Ligands without Optical Resolution

2020 ◽  
Author(s):  
Ziqing Zuo ◽  
Raphael Kim ◽  
Donald Watson
Keyword(s):  
Optical Resolution ◽  
Chiral Ligands ◽  
Chiral Auxiliaries ◽  
Axially Chiral ◽  
Ullmann Coupling

<div><p>We report an asymmetric Ullmann-type homocoupling of <i>ortho-</i>(iodo)arylphosphine oxides and <i>ortho</i>-(iodo)arylphosphonates that results in highly enantioenriched axially chiral bisphosphine oxides and bisphosphonates in good yields and excellent enantioselectivities. These products are readily converted to enantioenriched biaryl bisphosphines without need for chiral auxiliaries or optical resolution. This process provides a straightforward and practical route for the development of previously uninvestigated atroposelective biaryl bisphosphine ligands.</p></div>

Novel Chiral Ligands for Palladium-catalyzed Asymmetric Allylic Alkylation/ Asymmetric Tsuji-Trost Reaction: A Review

2019 ◽  
Vol 23 (11) ◽  
pp. 1168-1213 ◽  
Author(s):  
Samar Noreen ◽  
Ameer Fawad Zahoor ◽  
Sajjad Ahmad ◽  
Irum Shahzadi ◽  
Ali Irfan ◽  
...  
Keyword(s):  
Asymmetric Catalysis ◽  
Enantioselective Synthesis ◽  
Chiral Ligands ◽  
Allylic Alkylation ◽  
Research Groups ◽  
Asymmetric Allylic Alkylation ◽  
Catalytic Potential ◽  
Long Time ◽  
Palladium Catalyzed ◽  
Alkylation Reactions

Background: Asymmetric catalysis holds a prestigious role in organic syntheses since a long time and chiral inductors such as ligands have been used to achieve the utmost desired results at this pitch. The asymmetric version of Tsuji-Trost allylation has played a crucial role in enantioselective synthesis. Various chiral ligands have been known for Pdcatalyzed Asymmetric Allylic Alkylation (AAA) reactions and exhibited excellent catalytic potential. The use of chiral ligands as asymmetric inductors has widened the scope of Tsuji-Trost allylic alkylation reactions. Conclusion: Therefore, in this review article, a variety of chiral inductors or ligands have been focused for palladium catalyzed asymmetric allylic alkylation (Tsuji-Trost allylation) and in this regard, recently reported literature (2013-2017) has been described. The use of ligands causes the induction of enantiodiscrimination to the allylated products, therefore, the syntheses of various kinds of ligands have been targeted by many research groups to employ in Pd-catalyzed AAA reactions.

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