8
ORGANIC SYNTHESIS—1995
I.A.2-9 Iseki, K., Nagai, I. and Kobayashi, Y., TA, 5, 961; Imaeda, T.,
Hamada, Y. and Shioiri, T., TL, 35, 591; see also: Davies, S.G. et al., TA,
5, 585; see also: Thirring, K. et al., CC, 1291.
J*
1
J*
1
°CX^
υ L D A
* °00^
3
Ϊ J
R
2)CF 3 I,Et 3 B
J J
R
10-86%, 23-62% de
I.A.2-10 Palomo, C. et al., CC, 1861; see also: Oppolzer, W. et al.,
HCA, 77, 2363.
/ 4 ^ \ ^ Q
1) MN(TMS) 2 / J \ ^ Q
/ ^ — H
2)R*X
/ ^ — Ν
R ,
R
a new chiral auxiliary
40-83%
fc
99:1 to >99.9:1
I.A.2-11 Reetz, M.T. et al., TL, 3 5 , 8769.
Bn 2 N N
,CN
L D A
B n 2 N s
R
R'X
JCN
B n 2 N v
R
R'
R
R'
39-77%, >95 : 5