14
ORGANIC SYNTHESIS—1995
I.A.4-6 Tietze, L.F. et al., SL, 511; Plantier, R. and Portella, C, SL, 527.
TMS
r
R
1) BuLi, 4h
►
2) 12-C-4, 2d
HQ S s ^ / S pTMS
41-89%
I.A.4-7 Toru, T. et al., Γ, 50, 1045; Kosugi, H. et al., TA, 5, 1139.
*V p
1)LDA,-78°C
\
fi
•se,
► ^sL ^ \
R ^ ^ C H j
2) RSiCH 2 I
R ^ ^ ^ ^SiR'
68-99%, >99% ee
I.A.4-8 Carretero, J.-C. et al., TL, 35, 4603.
O
BnlA
PhO
1) BuLi
BnK
O
2) Mei
„.·
\
P h 0 2 S — ^
\
Me '
79%,>98:<2
ORGANIC SYNTHESIS—1995
I.A.4-6 Tietze, L.F. et al., SL, 511; Plantier, R. and Portella, C, SL, 527.
TMS
r
R
1) BuLi, 4h
►
2) 12-C-4, 2d
HQ S s ^ / S pTMS
41-89%
I.A.4-7 Toru, T. et al., Γ, 50, 1045; Kosugi, H. et al., TA, 5, 1139.
*V p
1)LDA,-78°C
\
fi
•se,
► ^sL ^ \
R ^ ^ C H j
2) RSiCH 2 I
R ^ ^ ^ ^SiR'
68-99%, >99% ee
I.A.4-8 Carretero, J.-C. et al., TL, 35, 4603.
O
BnlA
PhO
1) BuLi
BnK
O
2) Mei
„.·
\
P h 0 2 S — ^
\
Me '
79%,>98:<2