REDUCTIONS
211
III.E.1-11 Iwata, C. et al., CPB, 42,1756; Kamochi, Y. and Kudo, T., TL,
35,4169.
B11O2C
HO
Bu0 2 C
Rh - AI2O3, EtOH, H 2
Η θ 1
99%
III.E.1-12 Schmidt, U. et al., CC, 1915.
R
N
I
H
O
R, R' = alkyl, aryl
X = (S) - Pro-NR 2
H 2 , cat.
IILE.1-13 Takaya, H. et al., SL, 501 ; Beck, G., Jendralla, H. and
Kammermeier, B., T, 50,4691; see also: Wakamatsu, T. et al., H, 37, 739;
Broene, R.D. and Buchwald, S.L., JACS, 116, 12569.
R
R2
H
Ri
C0 2 H
H 2 , MeOH
R
R2
Ri
C0 2 H
83-99 %
82-97 % e.e.
211
III.E.1-11 Iwata, C. et al., CPB, 42,1756; Kamochi, Y. and Kudo, T., TL,
35,4169.
B11O2C
HO
Bu0 2 C
Rh - AI2O3, EtOH, H 2
Η θ 1
99%
III.E.1-12 Schmidt, U. et al., CC, 1915.
R
N
I
H
O
R, R' = alkyl, aryl
X = (S) - Pro-NR 2
H 2 , cat.
IILE.1-13 Takaya, H. et al., SL, 501 ; Beck, G., Jendralla, H. and
Kammermeier, B., T, 50,4691; see also: Wakamatsu, T. et al., H, 37, 739;
Broene, R.D. and Buchwald, S.L., JACS, 116, 12569.
R
R2
H
Ri
C0 2 H
H 2 , MeOH
R
R2
Ri
C0 2 H
83-99 %
82-97 % e.e.