New P,N ligands with chiral nitrogen center: Applications in homogeneous catalysis
In order to perform homogeneous asymmetric hydroformylation, hydrosilylation and Grignard cross-coupling reaction, we have developed a new family of P,N ligands derived from quincorine and quincoridine.
Saluzzo, Christine,Breuzard, Jérémy,Pellet-Rostaing, Stéphane,Vallet, Martial,Le Guyader, Frédéric,Lemaire, Marc
p. 98 - 104
(2007/10/03)
Grignard cross-coupling catalyzed by chiral phosphino-quincorine and phosphino-quincoridine derivatives
New β-aminoalkylphosphines with a stereogenic nitrogen center have been synthesized from quincorine and quincoridine. Nickel catalysts were studied for their enantioselectivity in the asymmetric Kumada-Corriu reaction. The (2S,4S,5R)-2-diphenylphosphinomethyl-5-ethyl-quinuclidine-nickel complex led to e.e. of 85% for the cross-coupling of l-phenylethyl-magnesium chloride with vinyl bromide.
Pellet-Rostaing, Stephane,Saluzzo, Christine,Ter Halle, Rob,Breuzard, Jeremy,Vial, Laurent,Le Guyader, Frederic,Lemaire, Marc
p. 1983 - 1985
(2007/10/03)
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