298
ORGANIC SYNTHESIS—1995
IV.K.4-9 Duguay, G. et al., Γ, 50, 12609.
Phth
Et 3 N or pyr
Phth
RO
CH(OEt) 2
C0 2 R'
CH(OEt) 2
HO'
C0 2 R·
50-68%
IV.K.4-10 Chen, L.C. et a., H, 38, 1519.
a
SCH 2 R
PhI(OCOCF 3 ) 2
r\
57-64%
IV.K.4-11 Meier, H. et al., CB, 127, 955.
N = C = \
rrv
R
24-72%
IV.K.4-12 Ohsawa, A. et al., JOC, 59, 1319.
R
BuaSiK^^sj^
R
CIC0 2 R
CH 2 CI 2
X = NH, S, O
R 2 - Λ
C0 2 R 0-96%
X* = NC0 2 R, S, O
ORGANIC SYNTHESIS—1995
IV.K.4-9 Duguay, G. et al., Γ, 50, 12609.
Phth
Et 3 N or pyr
Phth
RO
CH(OEt) 2
C0 2 R'
CH(OEt) 2
HO'
C0 2 R·
50-68%
IV.K.4-10 Chen, L.C. et a., H, 38, 1519.
a
SCH 2 R
PhI(OCOCF 3 ) 2
r\
57-64%
IV.K.4-11 Meier, H. et al., CB, 127, 955.
N = C = \
rrv
R
24-72%
IV.K.4-12 Ohsawa, A. et al., JOC, 59, 1319.
R
BuaSiK^^sj^
R
CIC0 2 R
CH 2 CI 2
X = NH, S, O
R 2 - Λ
C0 2 R 0-96%
X* = NC0 2 R, S, O