Synthesis of Chiral Bis-MOP-type Diphosphines. Chelating Effect in Nickel-catalyzed Phosphination
authors Abreu, AR; Peixoto, AF; Almeida, AR; Lourenco, MAO; Neves, ACB; Bayon, JC; Pereira, MM
journal CHEMISTRY LETTERS
keywords ASYMMETRIC HYDROGENATION; LIGANDS SYNTHESIS; METAL-COMPLEXES; BINOL; PNP
abstract Chiral his-MOP-type diphosphines with alkyl and pyridyl bridges connecting the two binaphthyl units have been synthesized via [NiCl2(dppe)]-assisted phosphination of the corresponding aryl triflates. The effect of the amount of the nickel complex on the reaction yield was investigated. Catalytic and even stoichiometric amounts of the complex proved to be insufficient to promote an efficient phosphination, but the use of an excess of the metal complex provides good yields.
publisher CHEMICAL SOC JAPAN
issn 0366-7022
year published 2013
volume 42
issue 1
beginning page 37
ending page 39
digital object identifier (doi) 10.1246/cl.2013.37
web of science category Chemistry, Multidisciplinary
subject category Chemistry
unique article identifier WOS:000315542200013
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journal impact factor 1.361
5 year journal impact factor 1.324
category normalized journal impact factor percentile 27.966
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