SYNTHESIS OF HETEROCYCLES
IV.K.3-18 Kibayashi, C. et al., JOC, 59, 1358 and TL, 35, 595.
295
89%, 4.1:1
IV.K.3-19 Holmann, B. and Reissig, H.U., CB, 127, 2337.
,CF 3
TBS'
HO'
.N
Na 2 C0 3 , 20°
52-59%
IV.K.3-20 Marshall, G.R., Moeller, K.D. et al., TL, 35, 6989.
BocHrç,
£ 0 2 M e
BocHH
cPt anode
y \
I S ^ \
6.9 mA/cm
2
5% iPrOH/CH 3 CN
1 M n-Bu 4 BF 4
£ 0 2 M e
O \
48%
IV.K.3-21 Danishefsky, S.J. et al., JOC, 59, 355.
Meö
OMe
ÇHO
Pd/C (10 %J
W
Et 3 N
MeO