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Phosphite-phosphoramidite ligands

The use of phosphite-phosphoramidite ligands 168 a and b provided up to 98% ee in the hydrogenation of methyl (Z)-N-2-acelylarrii noci rinamale, but the activities were rather low when compared to 167 or to the corresponding diphosphine ligand [126]. [Pg.983]

Figure 2.38 Chiral bidentate phosphite-phosphoramidite ligands based on carbohydrates. Figure 2.38 Chiral bidentate phosphite-phosphoramidite ligands based on carbohydrates.
Scheme 7.6 Alkylations of aromatic aldehydes with AIR3 and (AlR3)2-DABCO in the presence of an in situ generated nickel catalyst from a D-glucose-de-rived phosphite-phosphoramidite ligand. Scheme 7.6 Alkylations of aromatic aldehydes with AIR3 and (AlR3)2-DABCO in the presence of an in situ generated nickel catalyst from a D-glucose-de-rived phosphite-phosphoramidite ligand.
A selection of monodentate phosphite and phosphoramidite ligands used for asymmetric hydrogenation. [Pg.611]

In comparison to other ligands, such as phosphines or phosphites, phosphoramidites represent quite a new class used in hydroformylation. With the exception of carbenes, which were introduced as the most recent class of ligands in 1997 (see Section 2.5), the first successful attempts with phosphoramidites were made in 1996 [3]. As with phosphites, the first phosphoramidites (in particular A/ -pyrrolylamidites) were designed for use as flame retardants [4]. [Pg.189]

Only recently did chiral phosphoramidites ligands come into the focus of asymmetric hydroformylation. Here only some typical examples will be discussed for the main part of stereoselective hydroformylation compare Section 4.3. In some cases, they could be used to replace phosphites. Reetz claimed several monoden-tate and bidentate phosphoramidite ligands for this purpose, but unfortunately no example was given [21]. [Pg.196]

The group of Alexakis subsequently reported a study on the use of bidentate furanoside phosphite-phosphoramidite and diphosphoramidite ligands for the Cu-catalysed AAA of cinnamyl-type substrates [29]. A range of different cinnamyl... [Pg.13]


See other pages where Phosphite-phosphoramidite ligands is mentioned: [Pg.278]    [Pg.60]    [Pg.67]    [Pg.196]    [Pg.265]    [Pg.64]    [Pg.278]    [Pg.60]    [Pg.67]    [Pg.196]    [Pg.265]    [Pg.64]    [Pg.16]    [Pg.16]    [Pg.1004]    [Pg.1016]    [Pg.1264]    [Pg.133]    [Pg.242]    [Pg.13]    [Pg.23]    [Pg.3]    [Pg.133]    [Pg.242]    [Pg.242]    [Pg.227]    [Pg.111]    [Pg.135]    [Pg.249]    [Pg.284]    [Pg.193]    [Pg.843]    [Pg.11]    [Pg.36]    [Pg.127]    [Pg.611]    [Pg.176]    [Pg.60]    [Pg.211]    [Pg.207]    [Pg.227]    [Pg.351]    [Pg.207]    [Pg.124]    [Pg.125]    [Pg.11]    [Pg.164]   
See also in sourсe #XX -- [ Pg.264 , Pg.268 ]




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Bidentate phosphite-phosphoramidite ligand

Ligands phosphites

Phosphite ligands

Phosphite-phosphoramidite

Phosphite-phosphoramidite phosphites

Phosphoramidite

Phosphoramidite ligands

Phosphoramidites

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