Synthesis, structures and catalytic activities of ruthenium(ii) carbonyl chloride complexes containing pyridine-functionalised N-heterocyclic carbenes

2009 ◽  
pp. 7132 ◽  
Author(s):  
Yong Cheng ◽  
Hui-Jun Xu ◽  
Jia-Feng Sun ◽  
Yi-Zhi Li ◽  
Xue-Tai Chen ◽  
...  
Keyword(s):  
Heterocyclic Carbenes ◽  
Chloride Complexes ◽  
Catalytic Activities ◽  
Carbonyl Chloride

On the behaviour of biradicaloid [P(μ-NTer)]2 towards Lewis acids and bases

2016 ◽  
Vol 52 (37) ◽  
pp. 6328-6331 ◽  
Author(s):  
Alexander Hinz ◽  
Axel Schulz ◽  
Alexander Villinger
Keyword(s):  
Lewis Acids ◽  
Heterocyclic Carbenes ◽  
Chloride Complexes ◽  
Lewis Bases ◽  
Acids And Bases ◽  
Lewis Acids And Bases

The well-known diphosphadiazane-1,3-diyl [P(μ-NTer)]2 (Ter = 2,6-bis(2,4,6-trimethyl-phenyl)-phenyl) was treated with Lewis bases such as N-heterocyclic carbenes and Lewis acids e.g. gold(i) chloride complexes.

C4-Ferrocenylsilyl-bridged and -substituted N-heterocyclic carbenes: complexation of germanium chloride

2017 ◽  
Vol 46 (17) ◽  
pp. 5508-5512 ◽  
Author(s):  
Yuzhong Wang ◽  
Hunter P. Hickox ◽  
Pingrong Wei ◽  
Gregory H. Robinson
Keyword(s):  
Heterocyclic Carbenes ◽  
Chloride Complexes

C4-Ferrocenylsilyl-bridged and -substituted N-heterocyclic carbenes and their germanium chloride complexes have been prepared and characterized.

Di- and tri-nuclear osmium carbonyl chloride complexes: x-ray structures of Os2(CO)8Cl2 and Os3(CO)12Cl2

1988 ◽  
Vol 13 (6) ◽  
pp. 429-433 ◽  
Author(s):  
John R. Moss ◽  
Margaret L. Niven ◽  
Elizabeth E. Sutton
Keyword(s):  
Chloride Complexes ◽  
X Ray ◽  
Carbonyl Chloride ◽  
Osmium Carbonyl

scholarly journals Catalytic atroposelective synthesis of axially chiral benzonitriles via chirality control during bond dissociation and CN group formation

2022 ◽  
Vol 13 (1) ◽  
Author(s):  
Ya Lv ◽  
Guoyong Luo ◽  
Qian Liu ◽  
Zhichao Jin ◽  
Xinglong Zhang ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Kinetic Resolution ◽  
Group Formation ◽  
Heterocyclic Carbenes ◽  
Large Set ◽  
Dynamic Kinetic Resolution ◽  
Catalytic Activities ◽  
Bond Dissociation ◽  
Axially Chiral ◽  
Chirality Control

AbstractThe applications of axially chiral benzonitriles and their derivatives remain mostly unexplored due to their synthetic difficulties. Here we disclose an unusual strategy for atroposelective access to benzonitriles via formation of the nitrile unit on biaryl scaffolds pre-installed with stereogenic axes in racemic forms. Our method starts with racemic 2-arylbenzaldehydes and sulfonamides as the substrates and N-heterocyclic carbenes as the organocatalysts to afford axially chiral benzonitriles in good to excellent yields and enantioselectivities. DFT calculations suggest that the loss of p-toluenesulfinate group is both the rate-determining and stereo-determining step. The axial chirality is controlled during the bond dissociation and CN group formation. The reaction features a dynamic kinetic resolution process modulated by both covalent and non-covalent catalytic interactions. The axially chiral benzonitriles from our method can be easily converted to a large set of functional molecules that show promising catalytic activities for chemical syntheses and anti-bacterial activities for plant protections.

Synthesis and Characterization of Novel Re(BIAN)(CO)3Cl Derivatives Including the First Example of a Water-soluble Tricarbonyl Rhenium(I) Complex with Bis(imino)acenaphthene Ligands

2014 ◽  
Vol 69 (6) ◽  
pp. 691-698 ◽  
Author(s):  
Elham Kianfar ◽  
Uwe Monkowius ◽  
Engelbert Portenkirchner ◽  
Günther Knör
Keyword(s):  
Water Soluble ◽  
Spectroscopic Techniques ◽  
Ortho Position ◽  
The Novel ◽  
Carbonyl Derivative ◽  
Chloride Complexes ◽  
Carbonyl Chloride ◽  
Rhenium Carbonyl ◽  
Halide Ligand

A series of rhenium(I) carbonyl chloride complexes carrying bis(imino)acenaphthene (BIAN) molecules as p-acceptor ligands was prepared and characterized by various spectroscopic techniques. Among the novel compounds described, the remarkable example of a deeply colored water-soluble rhenium carbonyl derivative is presented. The crystal structures of this family of BIAN compounds are also reported, which confirm the position of the chloro ligand at the tricarbonyl rhenium(I) center. In the case of BIAN ligands carrying bulky substituents in the ortho-position of the arylimino subunits, evidence has been found for an exchange of the halide ligand in solution, which is considered to be of major relevance for catalytic applications. Implications of our results for the fields of photocatalytic CO2 reduction and the controlled release of the gasotransmitter CO in aqueous solution are briefly discussed.

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