Table 2 Enantioselectivity of Rh(I)-catalysed hydrogenation of reaction (1) as a function of ligand restoring force in methanol at 25 °C under H2 (1 atm) for 24 h

From: Strain-dependent enantioselectivity in mechanochemically coupled catalytic hydrogenation

Entry

MFP

Yield (%)

R (%)

S (%)

e.r.

e.e. (%)

Estimated force (pN)

1

Z(2,2)

>99

51

49

1.04

2

−65

2

Z(2,3)

>99

64

36

1.78

28

−6

3

E(3,3)

>99

77

23

3.35

54

130

4

E(2,3)

>99

92

8

11.50

84

228