Bromides Catalyzed (bromide + catalyze)

Distribution by Scientific Domains


Selected Abstracts


Homo-coupling of Aryl Iodide and Bromide Catalyzed by Immobilized Palladium with a Bidentate Nitrogen Ligand

CHINESE JOURNAL OF CHEMISTRY, Issue 10 2009
Xiaofang Chen
Abstract The immobilized palladium onto organic-inorganic hybrid material, which contains bidentate nitrogen ligands, was a very effective catalyst for homo-coupling of aryl iodide and bromide. The protocol involved the use of N,N -dimethylacetamide as a solvent, and n -tributylamine as a base. The reaction generated the corresponding homo-coupling products in good to excellent yields at low catalyst loading (0.20 mol%). Furthermore, the silica-supported palladium catalyst could be recovered and recycled by a simple filtration of the reaction solution and used for five consecutive trials without loss of its activity. [source]


One-Pot Thioetherification of Aryl Halides Using Thiourea and Alkyl Bromides Catalyzed by Copper(I) Iodide Free from Foul-Smelling Thiols in Wet Polyethylene Glycol (PEG 200)

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 1 2010
Habib Firouzabadi
Abstract In this article, we have developed a new protocol for the thioarylation of structurally diverse alkyl bromides such as benzyl, cinnamyl, n -octyl, cyclohexyl, cyclopentyl, and tert -butyl bromides with aryl iodides, bromides and an activated chloride using thiourea catalyzed by copper(I) iodide in wet polyethylene glycol (PEG 200) as an eco-friendly medium in the presence of potassium carbonate at 80 and 100,C under an inert atmosphere. The process is free from foul-smelling thiols which makes this method more practical for the thioetherification of aryl halides. Another important feature of this method is the variety of alkyl bromides which are commercially available for the in situ generation of thiolate ions with respect to the existing protocols in which the less commercially available thiols are directly used for the preparation of arylthio ethers. [source]


Aromatic Amination of Aryl Bromides Catalyzed by Copper/,-Diketone Catalysts: The Effect of Concentration.

CHEMINFORM, Issue 14 2007
Ben de Lange
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]


Homocoupling of Aryl Bromides Catalyzed by Nickel Chloride in Pyridine.

CHEMINFORM, Issue 47 2006
Xiao-Chun Tao
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]


Suzuki Cross-Coupling Reactions Between Alkenylboronic Acids and Aryl Bromides Catalyzed by a Tetraphosphane-Palladium Catalyst.

CHEMINFORM, Issue 26 2004
Eugenie Peyroux
Abstract For Abstract see ChemInform Abstract in Full Text. [source]