256
ORGANIC SYNTHESIS—1995
IV.F-17 Burley, I. and Hawson, A.T., TL, 35, 7099; see also: Barco, A.
et al., TL, 35, 9293; Bourhis, M. and Vercauteren, J. TL, 35, 1981.
R ^ ^ N H X
1. R'Li
C0 2 H
2. NaH
3.
= < PPh,
X
10-90%
IV.F-18 Kiyooka, S. et al, JOC, 59, 1958.
NHCbz
JTMS
BF 3 Et 2 0
CH 2 CI 2 , -10 °C
70-80%
IV.F-19 Turos, E. et al., TL, 35, 8325.
1. ZnCl 2 (cat)
ocrj
oc
2. Ce(NH 4 )2(N0 3 )6
CO, MeOH
Me0 2
r
ft"
C
R·
28-55%
ORGANIC SYNTHESIS—1995
IV.F-17 Burley, I. and Hawson, A.T., TL, 35, 7099; see also: Barco, A.
et al., TL, 35, 9293; Bourhis, M. and Vercauteren, J. TL, 35, 1981.
R ^ ^ N H X
1. R'Li
C0 2 H
2. NaH
3.
= < PPh,
X
10-90%
IV.F-18 Kiyooka, S. et al, JOC, 59, 1958.
NHCbz
JTMS
BF 3 Et 2 0
CH 2 CI 2 , -10 °C
70-80%
IV.F-19 Turos, E. et al., TL, 35, 8325.
1. ZnCl 2 (cat)
ocrj
oc
2. Ce(NH 4 )2(N0 3 )6
CO, MeOH
Me0 2
r
ft"
C
R·
28-55%