ChemInform Abstract: Amination Reactions of Aryl Halides with Nitrogen-Containing Reagents Mediated by Palladium/Imidazolium Salt Systems.

ChemInform ◽  
2010 ◽  
Vol 33 (18) ◽  
pp. no-no
Author(s):  
Gabriela A. Grasa ◽  
Mihai S. Viciu ◽  
Jinkun Huang ◽  
Steven P. Nolan
Keyword(s):  
Aryl Halides ◽  
Imidazolium Salt ◽  
Salt Systems

Amination Reactions of Aryl Halides with Nitrogen-Containing Reagents Mediated by Palladium/Imidazolium Salt Systems

2001 ◽  
Vol 66 (23) ◽  
pp. 7729-7737 ◽  
Author(s):  
Gabriela A. Grasa ◽  
Mihai S. Viciu ◽  
Jinkun Huang ◽  
Steven P. Nolan
Keyword(s):  
Aryl Halides ◽  
Imidazolium Salt ◽  
Salt Systems

Palladium/Imidazolium Salt Catalyzed Coupling of Aryl Halides with Hypervalent Organostannates

2001 ◽  
Vol 3 (1) ◽  
pp. 119-122 ◽  
Author(s):  
Gabriela A. Grasa ◽  
Steven P. Nolan
Keyword(s):  
Aryl Halides ◽  
Imidazolium Salt

Catalytic Dehalogenation of Aryl Halides Mediated by a Palladium/Imidazolium Salt System

2001 ◽  
Vol 20 (16) ◽  
pp. 3607-3612 ◽  
Author(s):  
Mihai S. Viciu ◽  
Gabriela A. Grasa ◽  
Steven P. Nolan
Keyword(s):  
Aryl Halides ◽  
Salt System ◽  
Imidazolium Salt ◽  
Catalytic Dehalogenation

ChemInform Abstract: Catalytic Dehalogenation of Aryl Halides Mediated by a Palladium/Imidazolium Salt System.

ChemInform ◽  
2010 ◽  
Vol 32 (47) ◽  
pp. no-no
Author(s):  
Mihai S. Viciu ◽  
Gabriela A. Grasa ◽  
Steven P. Nolan
Keyword(s):  
Aryl Halides ◽  
Salt System ◽  
Imidazolium Salt ◽  
Catalytic Dehalogenation

Suzuki−Miyaura Cross-Coupling Reactions Mediated by Palladium/Imidazolium Salt Systems

2002 ◽  
Vol 21 (14) ◽  
pp. 2866-2873 ◽  
Author(s):  
Gabriela A. Grasa ◽  
Mihai S. Viciu ◽  
Jinkun Huang ◽  
Chunming Zhang ◽  
Mark L. Trudell ◽  
...  
Keyword(s):  
Cross Coupling ◽  
Coupling Reactions ◽  
Imidazolium Salt ◽  
Cross Coupling Reactions ◽  
Salt Systems

ChemInform Abstract: Suzuki-Miyaura Cross-Coupling Reactions Mediated by Palladium/Imidazolium Salt Systems.

ChemInform ◽  
2010 ◽  
Vol 33 (46) ◽  
pp. no-no
Author(s):  
Gabriela A. Grasa ◽  
Mihai S. Viciu ◽  
Jinkun Huang ◽  
Chunming Zhang ◽  
Mark L. Trudell ◽  
...  
Keyword(s):  
Cross Coupling ◽  
Coupling Reactions ◽  
Imidazolium Salt ◽  
Cross Coupling Reactions ◽  
Salt Systems

The solubility of calcium carbonate  in green liquor handling systems

TAPPI Journal ◽  
2019 ◽  
Vol 18 (10) ◽  
pp. 595-602
Author(s):  
ALISHA GIGLIO ◽  
VLADIMIROS G. PAPANGELAKIS ◽  
HONGHI TRAN
Keyword(s):  
Calcium Carbonate ◽  
Systematic Study ◽  
Kraft Pulp ◽  
Thermodynamic Simulation ◽  
Solubility Data ◽  
Pulp Mills ◽  
Persistent Problem ◽  
Green Liquor ◽  
Kraft Pulp Mills ◽  
Salt Systems

The formation of hard calcite (CaCO3) scale in green liquor handling systems is a persistent problem in many kraft pulp mills. CaCO3 precipitates when its concentration in the green liquor exceeds its solubility. While the solubility of CaCO3 in water is well known, it is not so in the highly alkaline green liquor environment. A systematic study was conducted to determine the solubility of CaCO3 in green liquor as a function of temperature, total titratable alkali (TTA), causticity, and sulfidity. The results show that the solubility increases with increased temperature, increased TTA, decreased causticity, and decreased sulfidity. The new solubility data was incorporated into OLI (a thermodynamic simulation program for aqueous salt systems) to generate a series of CaCO3 solubility curves for various green liquor conditions. The results help explain how calcite scale forms in green liquor handling systems.

Mild Temperature Copper-Catalyzed Amination of Aryl Halides with Aqueous Ammonia in the Presence of Pyridyldiketone Ligands

2019 ◽  
Author(s):  
Racha Abed Ali Abdine ◽  
Anna Walczak ◽  
Sultan Abu A Aeash ◽  
Gracjan Kurpik ◽  
Artur R. Stefankiewicz ◽  
...  
Keyword(s):  
Catalytic System ◽  
Aqueous Ammonia ◽  
Aryl Halides ◽  
Efficient Coupling ◽  
Ambidentate Ligand ◽  
Mild Temperature

Ambidentate ligand pyridyldiketones were used in combination with copper to catalyze maintain of aryl halides under very mild temperatures. This novel catalytic system allow efficient coupling in one of the smoothest conditions ever reported in literature.

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