CARBON-CARBON BOND FORMING REACTIONS
43
I.A.7.a.3-25 Hanessian, S. and Girard, C , SL, 865; Ishii, Y. et al, JOC,
59, 7902; Ohta, A. et al., CC, 1225; Orsini, F. et al., JOC, 59, 1; Butsugan,
Y. et al., BCJ, 67, 1126.
-wr" ^
Λ \
\
SmI 2 ,THF
o^^yJ^
EWG
78-81%
other Reformatsky type reactions reported using low-valent Ta;
Co(PMe 3 ) 4 or In / TMSC1
I.A.7.a.3-26 Suzuki, K. et al., SL, 359; see also: Dimmock, P.W. and
Whitby, R.J., CC, 2323; Takahashi, T. et al., JOM, 473, 117; Luker, T. and
Whitby, R.J., TL, 35, 9465; see also: Sato, F. et al., JOC, 59, 5521.
R v ^ · S
Cp 2 Zr(H)Cl
R'CHO
)H
R'
76-95% R
I.A.7.a.3-27 Hoffmann, R.W. et al., TL, 35, 4751 & S, 629; White, J.D.
and Johnson, A.T., JOC, 59, 3347.
TBDMSO
VN*
10 kbar, 2-OHpyr
TBDMSO
100%, 94% ds