scholarly journals Chiral catalysts derived from biomass: design, synthesis and applications in asymmetric catalysis

2019 ◽  
Vol 57 (6) ◽  
pp. 670-680
Author(s):  
Thi Thuy Duong Ngo ◽  
Khanh Duy Huynh ◽  
Houssein Ibrahim ◽  
Thi Huong Nguyen ◽  
Chloée Bournaud ◽  
...  
Keyword(s):  
Asymmetric Catalysis ◽  
Chiral Catalysts ◽  
Design Synthesis

Chiral dirhodium catalysts derived from l-serine, l-threonine and l-cysteine: design, synthesis and application

2015 ◽  
Vol 2 (8) ◽  
pp. 890-907 ◽  
Author(s):  
Jian Kang ◽  
Baofu Zhu ◽  
Jiewei Liu ◽  
Bo Wang ◽  
Li Zhang ◽  
...  
Keyword(s):  
Transfer Reactions ◽  
Chiral Catalysts ◽  
Design Synthesis ◽  
Carbene Transfer ◽  
Dirhodium Complexes ◽  
Dirhodium Catalysts

A series of dirhodium complexes were synthesized and found to be effective chiral catalysts for nitrene and carbene transfer reactions.

Mesoporous SBA-15-supported chiral catalysts: preparation, characterization and asymmetric catalysis

2009 ◽  
Vol 20 (2) ◽  
pp. 240-246 ◽  
Author(s):  
Guohua Liu ◽  
Mouming Liu ◽  
Yunqiang Sun ◽  
Jianyao Wang ◽  
Chuanshou Sun ◽  
...  
Keyword(s):  
Asymmetric Catalysis ◽  
Chiral Catalysts ◽  
Catalysts Preparation

scholarly journals Chiral covalent organic frameworks: design, synthesis and property

2020 ◽  
Author(s):  
X Han ◽  
C Yuan ◽  
B Hou ◽  
Lujia Liu ◽  
H Li ◽  
...  
Keyword(s):  
Porous Materials ◽  
Asymmetric Catalysis ◽  
Chiral Recognition ◽  
Building Blocks ◽  
Enantioselective Separation ◽  
Structural Studies ◽  
Covalent Organic Frameworks ◽  
Covalent Bonds ◽  
Design Synthesis ◽  
Potential Applications

Covalent organic frameworks (COFs) are constructed using reticular chemistry with the building blocks being connected via covalent bonds and have emerged as a new series of porous materials for multitudinous applications. Most COFs reported to date are achiral, and only a small fraction of COFs with chiral nature are reported. This review covers the recent advances in the field of chiral COFs (CCOFs), including their design principles and synthetic strategies, structural studies, and potential applications in asymmetric catalysis, enantioselective separation, and chiral recognition. Finally, we illustrate the remaining challenges and future opportunities in this field.

scholarly journals Kinetic Insights into Cyanosilylation of Aldehydes Catalyzed by a Covalently Bridged Dinuclear (Salen)titanium Complex

2020 ◽  
Author(s):  
Zhipeng Zhang ◽  
Zheng Wang ◽  
Kuiling Ding
Keyword(s):  
Asymmetric Catalysis ◽  
Catalytic System ◽  
Catalytic Mechanism ◽  
Organic Reactions ◽  
Kinetic Investigation ◽  
Chiral Catalysts ◽  
Titanium Complex ◽  
Trimethylsilyl Cyanide ◽  
First Order ◽  
Dual Activation

Enantioselective addition of trimethylsilyl cyanide (TMSCN) to aldehydes is one of the most extensively studied organic reactions in asymmetric catalysis. Herein, we report our intensive kinetic investigation on the asymmetric addition of TMSCN to benzaldehyde, catalyzed by a covalently bridged dinuclear (salen)titanium complex <b>2</b>, which has been one of the most efficient artificial chiral catalysts reported so far for this reaction. It was found that the method of initial rates for kinetic investigation is not appropriate in this case because of the presence of a significant <a></a><a>incubation </a>period in the catalysis, while the method of progress rates proved to be more reliable and efficient for judging the kinetic orders of this catalytic system. The kinetic results revealed that <a>the reaction follows first order with respect to the catalyst</a> and is nearly independent of concentrations of both benzaldehyde and TMSCN<a>. A detailed catalytic mechanism for cyanosilylation of benzaldehyde in the presence of <b>2</b> was proposed, wherein the key active dinuclear species works in a cooperative manner for dual activation of both reactants.</a>

scholarly journals A Structurally Robust Chiral Borate Ion: Molecular Design, Synthesis, and Asymmetric Catalysis

2020 ◽  
Vol 59 (28) ◽  
pp. 11456-11461 ◽  
Author(s):  
Daisuke Uraguchi ◽  
Fumito Ueoka ◽  
Naoya Tanaka ◽  
Tomohito Kizu ◽  
Wakana Takahashi ◽  
...  
Keyword(s):  
Asymmetric Catalysis ◽  
Molecular Design ◽  
Design Synthesis

Design, Synthesis and Use of Novel 3,3′-Disubstituted 2,2′-Bipyridine-Based Chiral Ligands: Asymmetric Catalysis in Direct Aldol Reactions

Synlett ◽  
2012 ◽  
Vol 23 (13) ◽  
pp. 1990-1994 ◽  
Author(s):  
Hong-Wu Zhao ◽  
Hai-Long Li ◽  
Yuan-Yuan Yue ◽  
Xiao Qin ◽  
Zhi-Hui Sheng ◽  
...  
Keyword(s):  
Asymmetric Catalysis ◽  
Chiral Ligands ◽  
Aldol Reactions ◽  
Design Synthesis

scholarly journals Chiral covalent organic frameworks: design, synthesis and property

2020 ◽  
Author(s):  
X Han ◽  
C Yuan ◽  
B Hou ◽  
Lujia Liu ◽  
H Li ◽  
...  
Keyword(s):  
Porous Materials ◽  
Asymmetric Catalysis ◽  
Chiral Recognition ◽  
Building Blocks ◽  
Enantioselective Separation ◽  
Structural Studies ◽  
Covalent Organic Frameworks ◽  
Covalent Bonds ◽  
Design Synthesis ◽  
Potential Applications

Covalent organic frameworks (COFs) are constructed using reticular chemistry with the building blocks being connected via covalent bonds and have emerged as a new series of porous materials for multitudinous applications. Most COFs reported to date are achiral, and only a small fraction of COFs with chiral nature are reported. This review covers the recent advances in the field of chiral COFs (CCOFs), including their design principles and synthetic strategies, structural studies, and potential applications in asymmetric catalysis, enantioselective separation, and chiral recognition. Finally, we illustrate the remaining challenges and future opportunities in this field.

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