42
ORGANIC SYNTHESIS—1995
I.A.7.a.3-23 Marko, I.E. and Leung, C.W., JACS, 116, 371.
R^^R
+
R ^ - ^ R
Me 3 Tl, MeLi
►
ether, -50°C
H
R
R'
R
H
Me
R'
78-95%, 1:1 to >75:1
I.A.7.a.3-24 Yamamoto, H. et al., JACS, 116, 6130; Schmid, W. et al.,
T, 50, 749 & LA, 73; Saigo, K. et al., TL, 35, 4805; Taddei, M. et al., TL,
35, 3183.
R
1
,C1 l)Ba/THF
R
2) R
2 COR
3
56-98%, 3-99:1
similar allylations reported with In, Gel2 / ZnÏ2 or OCI2
ORGANIC SYNTHESIS—1995
I.A.7.a.3-23 Marko, I.E. and Leung, C.W., JACS, 116, 371.
R^^R
+
R ^ - ^ R
Me 3 Tl, MeLi
►
ether, -50°C
H
R
R'
R
H
Me
R'
78-95%, 1:1 to >75:1
I.A.7.a.3-24 Yamamoto, H. et al., JACS, 116, 6130; Schmid, W. et al.,
T, 50, 749 & LA, 73; Saigo, K. et al., TL, 35, 4805; Taddei, M. et al., TL,
35, 3183.
R
1
,C1 l)Ba/THF
R
2) R
2 COR
3
56-98%, 3-99:1
similar allylations reported with In, Gel2 / ZnÏ2 or OCI2