Asymmetric benzoylation and Henry reaction using reusable polytopic bis(oxazoline) ligands and copper(ii)

2014 ◽  
Vol 38 (10) ◽  
pp. 4748-4753 ◽  
Author(s):  
Maria Torres-Werlé ◽  
Adela Nano ◽  
Aline Maisse-François ◽  
Stéphane Bellemin-Laponnaz
Keyword(s):  
Kinetic Resolution ◽  
Chiral Ligands ◽  
Henry Reaction ◽  
Oxazoline Ligands

Multitopic bis(oxazoline)-based chiral ligands are associated with copper to generate catalysts for the asymmetric benzoylation of meso-hydrobenzoin, the kinetic resolution of rac-hydrobenzoin and the asymmetric Henry reaction.

scholarly journals Readily Available [2.2.2]-Bicyclooctadienes as New Chiral Ligands for Ir(I): Catalytic, Kinetic Resolution of Allyl Carbonates.

ChemInform ◽  
2004 ◽  
Vol 35 (25) ◽  
Author(s):  
Christian Fischer ◽  
Christian Defieber ◽  
Takeyuki Suzuki ◽  
Erick M. Carreira
Keyword(s):  
Kinetic Resolution ◽  
Chiral Ligands

scholarly journals Dynamic kinetic resolution of 2-methyl-2-nitrocyclohexanol: Combining the intramolecular nitroaldol (Henry) reaction & lipase-catalysed resolution

Tetrahedron ◽  
2018 ◽  
Vol 74 (13) ◽  
pp. 1435-1443 ◽  
Author(s):  
Aoife M. Foley ◽  
Declan P. Gavin ◽  
Rebecca E. Deasy ◽  
Sinéad E. Milner ◽  
Thomas S. Moody ◽  
...  
Keyword(s):  
Kinetic Resolution ◽  
Henry Reaction ◽  
Dynamic Kinetic Resolution

Comparative study of different chiral ligands for dynamic kinetic resolution of amino acids

Chirality ◽  
2021 ◽  
Vol 33 (10) ◽  
pp. 685-702
Author(s):  
Keita Nagaoka ◽  
Arina Nakano ◽  
Jianlin Han ◽  
Tsubasa Sakamoto ◽  
Hiroyuki Konno ◽  
...  
Keyword(s):  
Amino Acids ◽  
Comparative Study ◽  
Kinetic Resolution ◽  
Chiral Ligands ◽  
Dynamic Kinetic Resolution

Chemical Kinetic Resolution of Unprotected β-Substituted β-Amino Acids Using Recyclable Chiral Ligands

2014 ◽  
Vol 126 (30) ◽  
pp. 8017-8020 ◽  
Author(s):  
Shengbin Zhou ◽  
Jiang Wang ◽  
Xia Chen ◽  
José Luis Aceña ◽  
Vadim A. Soloshonok ◽  
...  
Keyword(s):  
Amino Acids ◽  
Kinetic Resolution ◽  
Chemical Kinetic ◽  
Chiral Ligands

scholarly journals Recyclable and Stable α-Methylproline-Derived Chiral Ligands for the Chemical Dynamic Kinetic Resolution of free C,N-Unprotected α-Amino Acids

Molecules ◽  
2019 ◽  
Vol 24 (12) ◽  
pp. 2218
Author(s):  
Shuangjie Shu ◽  
Liang Zhao ◽  
Shengbin Zhou ◽  
Chenglin Wu ◽  
Hong Liu ◽  
...  
Keyword(s):  
Amino Acids ◽  
Schiff Base ◽  
Kinetic Resolution ◽  
Chiral Ligands ◽  
Chiral Ligand ◽  
Quaternary Carbon ◽  
Dynamic Kinetic Resolution ◽  
High Yields

A novel special designed, stable, and recyclable chiral ligand bearing a quaternary carbon was developed for chemical dynamic kinetic resolution (DKR) of free C,N-unprotected racemic α-amino acids via Schiff base intermediates. This method furnishes high yields with excellent enantioselectivity, has a broad substrate scope, and uses operationally simple and convenient conditions. The present chemical DKR is a practical and useful method for the preparation of enantiopure α-amino acids.

scholarly journals Applications of "planar-chiral" heterocycles in asymmetric catalysis

2001 ◽  
Vol 73 (7) ◽  
pp. 1113-1116 ◽  
Author(s):  
Gregory C. Fu
Keyword(s):  
Asymmetric Catalysis ◽  
Ring Opening ◽  
Kinetic Resolution ◽  
Ring Expansion ◽  
Chiral Ligands ◽  
Primary Amines ◽  
Allylic Alcohols ◽  
Catalyzed Reactions ◽  
Metal Catalyzed ◽  
Derivatives Of

Planar-chiral derivatives of pyridine function as efficient catalysts for processes such as the kinetic resolution of primary amines and the desymmetrization/ring-opening of meso epoxides. Planar-chiral pyrrolyl and phospholyl derivatives serve as effective chiral ligands for a range of metal-catalyzed reactions, including the copper-catalyzed ring-expansion of oxetanes and the rhodium-catalyzed isomerization of allylic alcohols.

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