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doi:10.1595/147106709X481372
•Platinum Metals Rev., 2010, 54, (1)•
O
O
O
O
Cl
Br
F
F 3 C
D: 0.4 h, 94% ee E: 4 h, 95% ee D: 0.5 h, 95% ee E: 1.8 h, 94% ee
E: 3 h, 94% ee F: 0.25 h, 94% ee F: 0.3 h, 94% ee F: 0.17 h, 91% ee
F: 0.17 h, 94% ee H: 2.5 h, 93% ee
H: 0.17 h, 92% ee
O
O
O
O
NC
O 2 N
D: 0.17 h, 91% ee D: 0.5 h, 88% ee D: 6 h, 93% ee D: 20 h, 97% ee
E: 4.5 h, 92% ee F: 0.75 h, 87% ee F: 0.5 h, 92% ee F: 0.5 h, 93% ee
F: 0.4 h, 90% ee H: 0.5 h, 91% ee
Me
MeO
O
O
O
O
Cl
Me
D: 1 h, 71% ee F: 1 h, 80% ee D: 24 h, 81% ee F: 1 h, 92% ee
F: 0.3 h, 77% ee F: 1 h, 79% ee
OMe
Br
O
MeO
O
O
O
F: 0.25 h, 89% ee D: 0.5 h, 98% ee G: 3.5 h, 94% ee D: 0.75 h, 96% ee
E: 3 h, 90% ee E: 1 h, 95% ee
F: 0.5 h, 93% ee F: 0.75 h, 95% ee
H: 0.75 h, 96% ee
O
O
D: 3 h, 99% ee D: 9 h, 97% ee D: 0.08 h, 99% ee D: 1.5 h, 99% ee
F: 0.5 h, 97% ee F: 0.5 h, 95% ee E: 1 h, 99% ee F: 0.25 h, 94% ee
F: 0.08 h, 99% ee
G: 1.5 h, 99% ee
H: 0.08 h, 99% ee
O
S
O
O
O
O O
N
F: 0.75 h, 99% ee D: 0.25 h, 95% ee
N
N
C: 24 h, 98% ee
F: 0.17 h, 96% ee D: 0.5 h, 98% ee D: 16 h, 78% ee
i Bu
O
O
S
O
D: Rh-2 (S:C 100); E: Rh-2 (S:C 1000); F: Rh-3a (S:C 100) in air; G: Rh-3a (S:C 1000) in air;
H: Rh-3b (S:C 100) in air
Scheme III. Examples of Rhodium-catalysed asymmetric transfer hydrogenation by HCOONa in water at 40ºC
9 © 2010 Johnson Matthey