158
ORGANIC SYNTHESIS—1995
I.H.1-6 Kazmaier, U., JOC, 59, 6667 and T, 50, 12895; see also:
Metz, P. and Linz, C , T, 50, 3951.
O
1. LDA, ZnCl 2
Pd(PPh 3 ) 4
O
o
O
2. CHN 2
R*
N
C0 2 Me
54%
I.H.1-7 Honda, K. and Inoue, S., SL, 739.
Et0 2 C,
R
NaOEt
N +Me2 EtOH, 0°C, 2h
BrOHC
I.H.1-8 Olsson, T. et al. SL, 271.
R
1
1. R
2 Cu(LiI)/TMSI
O
R
2. TEA
3. rt
O
H0 2 C
57-88%
I.H.1-9 Pausier, M.G. and Rutledge, P.S., AJC, 47, 2135, 2149;
Harwood, L.M. et al., JCS(Pl), 3095.
Na 2 S 2 0 4 , aq DMF
-»- <
96%