ChemInform Abstract: High Turnover Number and Rapid, Room-Temperature Amination of Chloroarenes Using Saturated Carbene Ligands.

ChemInform ◽  
2010 ◽  
Vol 31 (36) ◽  
pp. no-no
Author(s):  
Shaun R. Stauffer ◽  
Sunwoo Lee ◽  
James P. Stambuli ◽  
Sheila I. Hauck ◽  
John F. Hartwig
Keyword(s):  
Room Temperature ◽  
Carbene Ligands ◽  
Turnover Number ◽  
High Turnover

High Turnover Number and Rapid, Room-Temperature Amination of Chloroarenes Using Saturated Carbene Ligands

2000 ◽  
Vol 2 (10) ◽  
pp. 1423-1426 ◽  
Author(s):  
Shaun R. Stauffer ◽  
Sunwoo Lee ◽  
James P. Stambuli ◽  
Sheila I. Hauck ◽  
John F. Hartwig
Keyword(s):  
Room Temperature ◽  
Carbene Ligands ◽  
Turnover Number ◽  
High Turnover

scholarly journals Photocatalytic oxidation of benzene to phenol using dioxygen as an oxygen source and water as an electron source in the presence of a cobalt catalyst

2017 ◽  
Vol 8 (10) ◽  
pp. 7119-7125 ◽  
Author(s):  
Ji Won Han ◽  
Jieun Jung ◽  
Yong-Min Lee ◽  
Wonwoo Nam ◽  
Shunichi Fukuzumi
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Photocatalytic Oxidation ◽  
Cobalt Catalyst ◽  
Electron Source ◽  
Light Irradiation ◽  
Turnover Number ◽  
High Turnover ◽  
Hydroxylation Of Benzene ◽  
Oxidation Of Benzene

The present study reports the first example of photocatalytic hydroxylation of benzene with O2 and H2O, both of which are the most green reagents, under visible light irradiation to afford a high turnover number.

scholarly journals Photocatalytic reduction of CO2 and H2O to CO and H2 with a cobalt chlorin complex adsorbed on multi-walled carbon nanotubes

2016 ◽  
Vol 6 (12) ◽  
pp. 4077-4080 ◽  
Author(s):  
Shoko Aoi ◽  
Kentaro Mase ◽  
Kei Ohkubo ◽  
Shunichi Fukuzumi
Keyword(s):  
Carbon Nanotubes ◽  
Photocatalytic Reduction ◽  
Turnover Number ◽  
High Turnover ◽  
Multi Walled Carbon Nanotubes ◽  
Reduction Of Co2 ◽  
Walled Carbon Nanotubes

The photocatalytic reduction of CO2 and H2O with triethylamine occurred using a cobalt(ii) chlorin complex adsorbed on multi-walled carbon nanotubes as a catalyst to yield CO and H2 with a high turnover number of 710.

Suzuki–Miyaura coupling with high turnover number using an N-acyl-N-heterocyclic carbene palladacycle precursor

2004 ◽  
Vol 45 (20) ◽  
pp. 3849-3853 ◽  
Author(s):  
Hector Palencia ◽  
Federico Garcia-Jimenez ◽  
James M. Takacs
Keyword(s):  
Turnover Number ◽  
High Turnover

Highly efficient and robust molecular water oxidation catalysts based on ruthenium complexes

2014 ◽  
Vol 50 (85) ◽  
pp. 12947-12950 ◽  
Author(s):  
Lei Wang ◽  
Lele Duan ◽  
Ying Wang ◽  
Mårten S. G. Ahlquist ◽  
Licheng Sun
Keyword(s):  
Catalytic Activity ◽  
Dicarboxylic Acid ◽  
Water Oxidation ◽  
Ruthenium Complexes ◽  
Molecular Water ◽  
Oxidation Catalysts ◽  
Turnover Number ◽  
High Turnover ◽  
Molecular Catalyst ◽  
Highly Efficient

The molecular catalyst Ru(bda)L2 (H2bda = 2,2′-bipyridine-6,6′-dicarboxylic acid, L = 6-bromophthalazine) shows excellent catalytic activity for water oxidation. By using Ce(NH4)2(NO3)6 as an oxidant, the catalyst reached a high turnover number TON = 100 000 in 3 hours.

High-turnover visible-light photoreduction of CO2 by a Re(i) complex stabilized on dye-sensitized TiO2

2014 ◽  
Vol 50 (34) ◽  
pp. 4462-4464 ◽  
Author(s):  
Eun-Gyeong Ha ◽  
Jeong-Ah Chang ◽  
Sung-Min Byun ◽  
Chyongjin Pac ◽  
Dong-Myung Jang ◽  
...  
Keyword(s):  
Visible Light ◽  
Turnover Number ◽  
High Turnover ◽  
Dye Sensitized

Higher photocatalytic CO2 conversion to CO with a turnover number of 435 was achieved by the ternary dye-sensitized systems comprising a dye/TiO2/Re platform.

scholarly journals Bi- and trinuclear copper(I) complexes of 1,2,3-triazole-tethered NHC ligands: synthesis, structure, and catalytic properties

2016 ◽  
Vol 12 ◽  
pp. 863-873 ◽  
Author(s):  
Shaojin Gu ◽  
Jiehao Du ◽  
Jingjing Huang ◽  
Huan Xia ◽  
Ling Yang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Copper Complexes ◽  
Catalytic Properties ◽  
Polynuclear Complexes ◽  
Carbene Ligands ◽  
Efficient Catalyst ◽  
X Ray ◽  
X Ray Crystallography ◽  
Air Atmosphere ◽  
Highly Active

A series of copper complexes (3–6) stabilized by 1,2,3-triazole-tethered N-heterocyclic carbene ligands have been prepared via simple reaction of imidazolium salts with copper powder in good yields. The structures of bi- and trinuclear copper complexes were fully characterized by NMR, elemental analysis (EA), and X-ray crystallography. In particular, [Cu2(L2)2](PF6)2 (3) and [Cu2(L3)2](PF6)2 (4) were dinuclear copper complexes. Complexes [Cu3(L4)2](PF6)3 (5) and [Cu3(L5)2](PF6)3 (6) consist of a triangular Cu3 core. These structures vary depending on the imidazolium backbone and N substituents. The copper–NHC complexes tested are highly active for the Cu-catalyzed azide–alkyne cycloaddition (CuAAC) reaction in an air atmosphere at room temperature in a CH3CN solution. Complex 4 is the most efficient catalyst among these polynuclear complexes in an air atmosphere at room temperature.

Catalytic hydrogenation of functionalized amides under basic and neutral conditions

2015 ◽  
Vol 5 (2) ◽  
pp. 1181-1186 ◽  
Author(s):  
Jeremy M. John ◽  
Rasu Loorthuraja ◽  
Evan Antoniuk ◽  
Steven H. Bergens
Keyword(s):  
Catalytic Hydrogenation ◽  
Turnover Number ◽  
High Turnover ◽  
Neutral Conditions

A new, base-free high turnover number (TON) catalyst for hydrogenation of simple and functionalized amides is prepared by reacting [Ru(η3-C3H5)(Ph2P(CH2)2NH2)2]BF4 and BH4− under hydrogen.

scholarly journals Efficient and Selective N-Dimethylation of Amines with Functional Aldehydes Catalysed by Ru Nanoparticles Heterogeneous Catalyst

2021 ◽  
Author(s):  
Jianguo Liu ◽  
Yanpei Song ◽  
Xiang Wu ◽  
Longlong Ma
Keyword(s):  
Heterogeneous Catalyst ◽  
Low Cost ◽  
Secondary Amines ◽  
Primary Amines ◽  
Turnover Number ◽  
High Turnover ◽  
Ru Nanoparticles ◽  
Ready Availability ◽  
Bulk Chemical ◽  
Operational Simplicity

<p>N-methylated amines are essential bioactive compounds and have been widely used in the fine and bulk chemical industries, as well as in pharmaceuticals, agrochemicals, and dyes. Developing green, efficient, and low-cost catalysts for methylation of amines by using efficient and easily accessible methylating reagents is highly desired yet remains a significant challenge. Herein, we report the selective N-dimethylation of different functional amines with different functional aldehydes under easily handle-able and industrially applicable conditions using carbon-supported Ru nanoparticles (Ru/C) as a heterogeneous catalyst. A broad spectrum of amines could be efficiently converted to their corresponding N, N-dimethyl amines with good compatibility of various functional groups. This method is widely applicable to N-dimethylation of primary amines including aromatic, aliphatic amines with formaldehyde, and synthesis of tertiary amines from primary, secondary amines with different functional aldehydes. The advantage of this newly described method includes operational simplicity, high turnover number, the ready availability of the catalyst, and good functional group compatibility. This Ru/C catalyzed N-dimethylation reaction possibly proceed through a twice N-methylation reaction process.</p>

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