278
ORGANIC SYNTHESIS—1995
IV.J-6 Viehe, H.G. et al., TL, 35, 1185; Martin, M.R. et al., T, 50,
13857.
R0 2 CL
C0 2 Me
C0 2 Me
4AMS
DMSO
135°
Me0 2 <
IV.J-7 Martin, S.F. et al., TL, 35, 6005.
Mo catalyst
Ph-H, rt to 50°
x = 1,2; n = 0-3
65-90%
IV.J-8 Echavarren, A.M. et al., TL, 35, 7435; see also: Jadhav, P.K. and
Woerner, F.J., TL, 35, 8973; Gurjar, M.K. et al., TL, 35, 8871; MartinLopez, M.J. and Bermejo-Gonzalez, F., TL, 35, 8843; Lhommet, G. et al.,
TL, 35, 6105; Hesse, M. et al., HCA, 77, 579; Kuciak, R. and Sas, W.,
TL, 35, 8647.
Me
Bu
NHTROC
O
1. Cd
HOAc/DMF
►
2. H 2 , Rh/C
Ö
NMe 60%
Bu
IV.J-9 Goti, A., Brandi, A. et al., TL, 35, 949 and Brandi, A. et al., T,
50, 12713.
g
pTBDPS
H xX OTBDPS
r^l^\
xylene
^ ^ ^ S ^ C
X O X >
0 T B D P S
~ï5F* I J L > 5 7
D P S