REDUCTIONS
209
III.E.1-3 Yamashita, M. et al., JOC, 59, 3500; Kabbara, J. et al., CB, 127,
1489; von Holleben, M.L. A. et al., Γ, 50,973; Schmidt, T., TL, 35, 3513;
Ranu, B.C. and Sarkar, A., TL, 35, 8649; Quayle, P. et al., TL, 35,4179 and
4183; Nagamatsu, T., Yoneda, F. et al., JCS(Pl), 1125; Rao, H.S.P and
Reddy, K.S., TL, 35, 171.
O
O
NaHTe, EtOH
R
^f
R'
R
^ ^
R'
5-98 %
m.E.1-4 Schmidt, U. et al., S, 1138; Genet, J.P. et al., TA, 5, 675; Takaya,
H. et al., JCS(Pl), 2309; Achiwa, K. et al., CPB, 42, 481.
Ç0 2 Et
H 2> 3 bar, rt, cat.
OR
R'
R'
cat. = Rh-DIPAMP, Ru-BINAP, Rh-BPPM
24-98 % e.e.
III.E.1-5 Obrecht, D. et al., HCA, 77, 1395; Borner, A., Kagan, H.B. et al.,
T, 50, 10419; Burk, M.J. et al., JACS, 116, 10847 and TL, 35, 9363; Sinou,
D. et al., OM, 13, 2951; Pham, T. and Lubell, W.D., JOC, 59, 3676.
C0 2 R·
C0 2 R'
/
[Rh(cod)L*]BF 4
/
/ \
MeOH, 60 bar, 40°C * /
\
R
NHCbz
R
NHCbz
I *
U- I U
U·
1·
J
4 6 - 9 9 %
L = entrai phosphme ligands
. i n n c ,
r
v
b
up to 100 % e.e.