Room Temperature Carbonylation of (Hetero) Aryl Pentafluorobenzenesulfonates and Triflates using Palladium-Cobalt Bimetallic Catalyst: Dual Role of Cobalt Carbonyl

2017 ◽  
Vol 359 (3) ◽  
pp. 419-425 ◽  
Author(s):  
Jayan T. Joseph ◽  
Ayyiliath M. Sajith ◽  
Revanna C. Ningegowda ◽  
Sheena Shashikanth
Keyword(s):  
Room Temperature ◽  
Bimetallic Catalyst ◽  
Dual Role ◽  
Cobalt Carbonyl

scholarly journals Halogenations of 3-aryl-1H-pyrazol-5-amines

2021 ◽  
Author(s):  
Jing He ◽  
Yueting Wei ◽  
Yijiao Feng ◽  
Chuntian Li ◽  
Bin Dai ◽  
...  
Keyword(s):  
Room Temperature ◽  
Dual Role ◽  
Pyrazole Derivatives ◽  
Reaction Conditions ◽  
Metal Free

A direct C-H halogenation of 3-aryl-1H-pyrazol-5-amines with NXS (X = Br, I, Cl) as cheap and safe halogenating reagents at room temperature has been developed. This transformation provides an effective metal-free protocol towards the synthesis of novel 4-halogenated pyrazole derivatives with moderate to excellent yields. The method represents simple and mild reaction conditions, broad substrate scope as well as gram-scale synthesis. The utility of this procedure is established by further transformations of the 4-halogenated products. Mechanism studies show that DMSO plays a dual role of catalyst and solvent.

Halogenations of 3-aryl-1H-pyrazol-5-amines

Synthesis ◽  
2021 ◽  
Author(s):  
Jing He ◽  
Yueting Wei ◽  
Yijiao Feng ◽  
Chuntian Li ◽  
Bin Dai ◽  
...  
Keyword(s):  
Room Temperature ◽  
Dual Role ◽  
Pyrazole Derivatives ◽  
Reaction Conditions ◽  
Metal Free

A direct C-H halogenation of 3-aryl-1H-pyrazol-5-amines with NXS (X = Br, I, Cl) as cheap and safe halogenating reagents at room temperature has been developed. This transformation provides an effective metal-free protocol towards the synthesis of novel 4-halogenated pyrazole derivatives with moderate to excellent yields. The method represents simple and mild reaction conditions, broad substrate scope as well as gram-scale synthesis. The utility of this procedure is established by further transformations of the 4-halogenated products. Mechanism studies show that DMSO plays a dual role of catalyst and solvent.

A photoactive bimetallic framework for direct aminoformylation of nitroarenes

2016 ◽  
Vol 18 (4) ◽  
pp. 1019-1022 ◽  
Author(s):  
R. B. Nasir Baig ◽  
Sanny Verma ◽  
Mallikarjuna N. Nadagouda ◽  
Rajender S. Varma
Keyword(s):  
Formic Acid ◽  
Carbon Nitride ◽  
Bimetallic Catalyst ◽  
Nitro Compounds ◽  
Dual Role ◽  
Graphitic Carbon Nitride ◽  
Aromatic Nitro Compounds ◽  
Aromatic Nitro ◽  
Chemical Conditions

A bimetallic catalyst, AgPd@g-C3N4, on graphitic carbon nitride enables the concerted reductive formylation of aromatic nitro compounds under photo-chemical conditions; formic acid serves the dual role of a hydrogen source and a formylating agent.

Dual role of B7 costimulation in obesity-related non-alcoholic steatohepatitis (NASH) and metabolic dysregulation

2014 ◽  
Vol 122 (03) ◽  
Author(s):  
A Chatzigeorgiou ◽  
R Garcia-Martin ◽  
KJ Chung ◽  
I Alexaki ◽  
A Klotzsche-von Ameln ◽  
...  
Keyword(s):  
Dual Role ◽  
Alcoholic Steatohepatitis ◽  
Metabolic Dysregulation

A dual role of the N-terminal FQQI motif in GLUT4 trafficking

2008 ◽  
Vol 3 (S 1) ◽  
Author(s):  
U Bernhardt ◽  
HG Joost ◽  
H Al-Hasani
Keyword(s):  
Dual Role
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