CARBON-CARBON BOND FORMING REACTIONS
25
I.A.7.a.la-7 Ganesan, K. and Brown, H.C., JOC, 59, 2336 and 7346;
Paterson, I. et al., TL, 35, 9083 and 9087 and Γ, 50, 1227; see also:
Gennari, C. et al., TL, 35, 4623 and 4857.
or
O R
1) (
c C 6 H n ) 2 BI, R 3 N
2) PhCHO
3 ) [ 0 ]
OH
OR °
r
Ph'
OR
>97%,R = Et
>97%, R =
l Bu
I.A.7.a.la-8 Yan, T.H. et al., JOC, 59, 8187; Boeckman, R.K., Jr. et
al., TL, 35, 8521; see also: Greene, A.E. et al., JOC, 59, 1238.
1) 9-BBN-OTf
J C JO
'Pr 2 NEt 2
2) RCHO "XT
59-88%
6.1-99:1
ÖH
I.A.7.a.la-9 Sinnes, J.-L. et al., T, 50, 2047; Shibata, I. et al., JOC, 59,
486; Oguni, N. et al., SC, 24, 3249.
/
O
/-°
OH(
,OR
52-75%
, 1) TiCl 4
2) ROH
ROH
OR'