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Noyori catalyst coupling

These transition-metal catalysts contain electronically coupled hydridic and acidic hydrogen atoms that are transferred to a polar unsaturated species under mild conditions. The first such catalyst was Shvo s diruthenium hydride complex reported in the mid 1980s [41 14], Noyori and Ikatiya developed chiral ruthenium catalysts showing excellent enantioselectivity in the hydrogenation of ketones [45,46]. [Pg.36]

Curve A in Scheme 6, represents an example of the asymmetric ampHfication obtained by Noyori et al. [12], which still remains the highest (-i-)-NLE known. The authors found that the reaction is first-order with respect to the catalyst and that the asymmetric ampHfication originates from the accumulation of unreactive meso-dimers of the zinc alcoholate of (-)-DAIB. The (-l-)-NLE maybe seen as the consequence of a reservoir, weakly coupled to the catalytic cycle and storing some racemic Hgand. [Pg.115]

W. S. Knowles, R. Noyori, K. B. Sharpless enantioselective catalysis) 2005 Y. Chauvin, R. H. Grubbs, R. R. Schrock (alkene metathesis) 2007 G. Ertl chem. processes on solid surfaces/mechanisms of heterogeneous catalysts) 2010 R. F. Heck, E. Negishi, A. Suzuki Pd Catalyzed cross coupling reactions). [Pg.526]


See other pages where Noyori catalyst coupling is mentioned: [Pg.100]    [Pg.376]    [Pg.354]    [Pg.347]    [Pg.344]    [Pg.107]    [Pg.430]    [Pg.215]    [Pg.167]    [Pg.169]    [Pg.76]    [Pg.161]    [Pg.87]    [Pg.202]    [Pg.119]   
See also in sourсe #XX -- [ Pg.86 , Pg.91 , Pg.424 ]




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