230
ORGANIC SYNTHESIS—1995
IV.C-9 Cinquini, M., Cozzi, F. et al., Γ, 50, 9471.
r
TiCl 4 / Et 3 N
Me
leH-f
o>"%*
13-84%
IV.C-10 Yamamoto, Y. et al., TL, 35, 8425
TBDMSO
OTr
TBDMS
-
-
1. EtMgBr,0°C
►
tBu0 2 C
N—Bn 2. NH 4 C1
H
81%
IV.C-11 Guanti, G. et al., T, 50, 11967 and 11994.
Boc
O R
EtQ 2 CN=NCQ 2 Et BocHN^ \ j
X
BocHN^
x Boc
PPh 3 , THF
or
OR
52-90%
IV.C-12 Torii, S. et al., JOC, 59, 3040.
^ Ί
Ph
CO (30 kg/cm
2 )
Pd 2 dba 3 CHCl 3 (2 mol % ) H
PPh 3 (8 mol%)
0 = P
?
+
foEt), " > M P
'Pr 2 NEt/THF 5h
Or
^PMP
31-54%
ORGANIC SYNTHESIS—1995
IV.C-9 Cinquini, M., Cozzi, F. et al., Γ, 50, 9471.
r
TiCl 4 / Et 3 N
Me
leH-f
o>"%*
13-84%
IV.C-10 Yamamoto, Y. et al., TL, 35, 8425
TBDMSO
OTr
TBDMS
-
-
1. EtMgBr,0°C
►
tBu0 2 C
N—Bn 2. NH 4 C1
H
81%
IV.C-11 Guanti, G. et al., T, 50, 11967 and 11994.
Boc
O R
EtQ 2 CN=NCQ 2 Et BocHN^ \ j
X
BocHN^
x Boc
PPh 3 , THF
or
OR
52-90%
IV.C-12 Torii, S. et al., JOC, 59, 3040.
^ Ί
Ph
CO (30 kg/cm
2 )
Pd 2 dba 3 CHCl 3 (2 mol % ) H
PPh 3 (8 mol%)
0 = P
?
+
foEt), " > M P
'Pr 2 NEt/THF 5h
Or
^PMP
31-54%