12 Ligand Effects in Ruthenium Nanoparticle Catalysis
435
Table 12.3
(continued)
Metal precursor
Stabilizing ligand
Synthetic
approach
Catalysis
Comments
Refs.
Ru(COD)(COT)
Fluorinated
phosphines
H
2 , 25 ºC, 18 h,
THF
Hydrogenation of aromatic compounds Catalysis performed
in THF and sc-CO
2
[55]
Ru(COD)(COT)
Roof-shaped
phosphines
H
2 , 25 ºC, 18 h,
THF
Hydrogenation of arenes
Marked ligand effect [56]
Ru(COD)(COT)
Sulphonated
diphosphines
H
2 , 25 ºC, 20 h,
THF
Hydrogenation of
styrene/acetophenone/m-methylanisole
Biphasic
hydrogenation in
water combined or
not with Me-CDs
[57, 58]
Ru(COD)(COT)
PTA
H
2 , 25 ºC, 20 h,
THF
Hydrogenation of olefins and arenes
Biphasic catalytic
reactions
[59]
Ru (COD)(COT)
Secondary
Phosphine oxides
(SPO)
H
2 , 25 ºC, 20 h,
THF
Hydrogenation of aromatic rings and
carbonyl groups
TOFs up to
2700 mol.h −1
in
hydrogenation of
benzene
[60]
Ru (COD)(COT)
Phosphite ligands
H
2 , 25 ºC, 20 h,
THF
Asymmetric hydrogenation of
pro-chiral arenes (o- and m-methyl
anisoles)
Poor ee
but high
selectivity for cis
products
[66]