118
ORGANIC SYNTHESIS—1995
I.E.1-48 Knolker, H.-J. and Graf, R., SL, 131; see also: Takeda, K.,
Nakayama, I. and Yoshii, E., SL, 178.
O
O
V^
V
TiCl 4 ,CH 2 CI 2 ► 'Pr.Si
Si'Pr 3
Si'Pr,
H
82%
(10:5:1)
I.E.1-49 Huval, C.C. and Singleton, D.A., TL, 35, 689; see also;
Monti, H. et al., TL, 35, 2885; see also: Trost, B.M. and Parquette, J.R.,
JOC, 59, 7568.
Bu
hv
Bu (Me 3 Sn) 2 , Ph-H
^
*~
rrW* \*^t*~*·*/ * Me
C0 2 Et
52%
I.E.1-50 Kopach, M.E. and Harman, W.D., JOC, 59, 6506.
MeO
[(NH 3 ) 5 Os]
(OTf) 2
MeO
NMe
BF 3 Et 2 0
MeCN/PrCN*
-50°C, lOmin /'"
[Os(NH 3 ) 5 ]
(OTf) 2
94%
NMe