Chemistry Reference
In-Depth Information
Me
[Rh(cod)
2
]Sb F
6
biphemp (5 mol %)
Me
MeO
2
C
MeO
2
C
SiEt
3
+
HSiEt
3
MeO
2
C
MeO
2
C
*
70 C
90
: 92% ee
89
Me
PPh
2
PPh
2
Me
(
R
)-biphemp (
91
)
H
[Rh(cod)
2
]BF
4
sd p (5 mo l %)
H
SiEt
3
+
HSiEt
3
Ts
N
Ts
N
*
70 C
93
:98%ee
92
PPh
2
PPh
2
(
R
)-sdp (
94
)
Scheme 9.19.
Ni(cod)
2
(
R
,
R
)-
97
(10 mol %)
OSi(OEt)
3
OSi(OEt)
3
MeO
2
C
MeO
2
C
MeO
2
C
CHO
+HS (OE
3
+
MeO
2
C
MeO
2
C
MeO
2
C
Î30 C
95
96a
: 73% ee
96b
P
Ph
(
R
,
R
)-
97
Scheme 9.20.
[YL*] (2 mol %)
*
+
i
SiH
2
Ph
3
rt
98
99
: 50% ee
Me
3
Si
Bu-
t
O
O
[YL*] =
Si
Y
H
2
Me
3
Si
Bu-
t
100
Scheme 9.21.
