248
ORGANIC SYNTHESIS—1995
IV.E-15 Marot, C. and Rollin, P., TL, 35, 8377; see also: Brown,
R.C.D. and Kocienski, P.J., SL, 415.
1.90% TFA
\ /
2. MeONa/MeOH
Q
O
,Ο
3.Ac 2 0/pyr
^
v
Pyr-0 2 S^A^>^
Bu
Ό
72%
OAc
IV.E-16 Kanematsu, K. et al., T, 50, 5645 and CC, 1979; Gustafsson, J.
and Sterner, O., JOC, 59, 3994; Grinsteiner, TJ. and Kishi, Y., TL, 35,
8333; Schlessinger, R.H. et al., JOC, 59, 3246; Cook, MJ. and Cracknell,
S.J., T, 50, 12125; Wong, H.N.C, et al., JOC, 59, 3917; Yadav, J.S. et al.,
TL, 35, 3609.
'BuOK
'BUOH
83°
88%
OH
IV.E-17 Grubbs, R.H. et al., JOC, 59, 4029.
12-13 mol %
20°
similarly for the synthesis of other vinyl ethers
87%
ORGANIC SYNTHESIS—1995
IV.E-15 Marot, C. and Rollin, P., TL, 35, 8377; see also: Brown,
R.C.D. and Kocienski, P.J., SL, 415.
1.90% TFA
\ /
2. MeONa/MeOH
Q
O
,Ο
3.Ac 2 0/pyr
^
v
Pyr-0 2 S^A^>^
Bu
Ό
72%
OAc
IV.E-16 Kanematsu, K. et al., T, 50, 5645 and CC, 1979; Gustafsson, J.
and Sterner, O., JOC, 59, 3994; Grinsteiner, TJ. and Kishi, Y., TL, 35,
8333; Schlessinger, R.H. et al., JOC, 59, 3246; Cook, MJ. and Cracknell,
S.J., T, 50, 12125; Wong, H.N.C, et al., JOC, 59, 3917; Yadav, J.S. et al.,
TL, 35, 3609.
'BuOK
'BUOH
83°
88%
OH
IV.E-17 Grubbs, R.H. et al., JOC, 59, 4029.
12-13 mol %
20°
similarly for the synthesis of other vinyl ethers
87%