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New Phosphine (new + phosphine)

Distribution by Scientific Domains
Chemistry100%

Selected Abstracts

ChemInform Abstract: Water-Soluble Palladium and Gold Nanoparticles Functionalized by a New Phosphine with Zwitterionic Liquid Based on Imidazolium Sulfonate Linked Ethylene Glycol Moiety.

CHEMINFORM, Issue 34 2010
Taichi Akiyama
Abstract The new phosphine (PHOS) is used to prepare stable metal nanoparticles in aqueous electrolyte. [source]

1-Alkynylphosphines and Their Derivatives as Key Starting Materials in Creating New Phosphines

CHEMISTRY - AN ASIAN JOURNAL, Issue 3 2010
Azusa Kondoh
Abstract This Focus Review summarizes transformations of 1-alkynylphosphines and their derivatives directed toward the synthesis of new phosphines. Owing to the importance of organophosphines as ligands for transition metal catalysts, development of efficient methods for the synthesis of new phosphines is quite important. 1-Alkynylphosphines and their derivatives have been emerging as useful precursors for the creation of new phosphines. Chemical modifications of the carbon,carbon triple bonds, including nucleophilic addition and cycloaddition, lead to a wide range of new useful phosphines that are otherwise difficult to synthesize. [source]

Quinaphos and Dihydro-Quinaphos Phosphine,Phosphoramidite Ligands for Asymmetric Hydrogenation

CHEMISTRY - A EUROPEAN JOURNAL, Issue 25 2010
Thomas Pullmann Dr.
Abstract New derivatives of the Quinaphos ligands and the related Dihydro-Quinaphos ligands based on the more flexible 1,2,3,4-tetrahydroquinoline backbone have been prepared and fully characterised. A general and straightforward separation protocol was devised, which allowed for the gram-scale isolation of the Ra,Sc and Sa,Rc diastereomers. These new phosphine,phosphoramidite ligands have been applied in the Rh-catalysed asymmetric hydrogenation of functionalised olefins with the achievement of excellent enantioselectivities (,99,%) in most cases and turnover frequency (TOF) values of up to ,20,000,h,1. These results substantiate the practical utility of readily accessible Quinaphos-type ligands, which belong to the most active and selective category of ligands for Rh-catalysed hydrogenation known to date. [source]

1-Alkynylphosphines and Their Derivatives as Key Starting Materials in Creating New Phosphines

CHEMISTRY - AN ASIAN JOURNAL, Issue 3 2010
Azusa Kondoh
Abstract This Focus Review summarizes transformations of 1-alkynylphosphines and their derivatives directed toward the synthesis of new phosphines. Owing to the importance of organophosphines as ligands for transition metal catalysts, development of efficient methods for the synthesis of new phosphines is quite important. 1-Alkynylphosphines and their derivatives have been emerging as useful precursors for the creation of new phosphines. Chemical modifications of the carbon,carbon triple bonds, including nucleophilic addition and cycloaddition, lead to a wide range of new useful phosphines that are otherwise difficult to synthesize. [source]