CARBON-CARBON BOND FORMING REACTIONS
99
I.D.2-3 de Meijere, A. and Spitzner, D. et al.., 7L, 35, 3269.
OMe
Me0 2 C
Cl
*
> - <
O Me0 2 C
MeO
LDA
59%
I.D.2-4 Shen, Y. and Xiang, Y., JCR(S), 198.
Br
Ph 3 P
+
I- PhLi
TFAA
R
R i 2. Ph 3 As=CH 2 F 3 C
AsPh,
CH 2 =CHC0 2 R
2
R
1
R
R f
R
1
C0 2 R
2
46-62%
I.D.2-5 Baldwin, J.E. et al., T, 50, 12015; Natsume, M. et al., TL, 35,
2573; see also: Husson, H.-P. et al., BSF, 131, 391.
TMS
TMS
OH
LDA, THF, -78°C
PhS0 2
O
PhS0 2
83%
I.D.2-6 Backvall, J.-E. et al., ACS, 48, 252; see also: Huang, Y.-Z. et
al., JCS(Pl), 893; Yamazaki, S. et al., JACS, 116, 2356; see also:
Dechoux, L. et al., SL, 965.
S0 2 Ph
R
1. LDA
-78^ -25°C )
2. 50°C
*
O
62-66%