104
ORGANIC SYNTHESIS—1995
I.E.1-8 Finn, M.G. et al., OM, 13, 2084
Me
1. CH2CI2
25°C, 24h
jW(CO) s 2.CAN,MeOH
OTiCp 2 Cl
C0 2 Me
I.E.1-9 Nakata, M. et al., SL, 71; Chiba, K. and Tada, M., CC, 2485;
see also: Westwell, A.D. and Williams, J.M.J., CC, 2501.
50%
α:β = 10:1
I.E.1-10 de Meijere, A. et al., SL, 191; Ovaska, T.V., Bailey, W.F. et
al., JOC, 59, 5868.
Et0 2 C C0 2 Et
O
Pd(OAc) 2
R PPI13, Ag 2 C0 3 Et0 2 C
MeCPÌ
*"
90°C, 45min
^
ίΌ ^
80-93%
ORGANIC SYNTHESIS—1995
I.E.1-8 Finn, M.G. et al., OM, 13, 2084
Me
1. CH2CI2
25°C, 24h
jW(CO) s 2.CAN,MeOH
OTiCp 2 Cl
C0 2 Me
I.E.1-9 Nakata, M. et al., SL, 71; Chiba, K. and Tada, M., CC, 2485;
see also: Westwell, A.D. and Williams, J.M.J., CC, 2501.
50%
α:β = 10:1
I.E.1-10 de Meijere, A. et al., SL, 191; Ovaska, T.V., Bailey, W.F. et
al., JOC, 59, 5868.
Et0 2 C C0 2 Et
O
Pd(OAc) 2
R PPI13, Ag 2 C0 3 Et0 2 C
MeCPÌ
*"
90°C, 45min
^
ίΌ ^
80-93%