396
ORGANIC SYNTHESIS—1995
VI.F-20 Flitsch, S.L. et al., TA, 5, 2163 and TL, 35, 6563.
Bu 2 SnO, MeOH
OR -
MejNS0 3
N a 0 3 S
OH
93-97%
VI.G. Tin Compounds
VI.G-1 Ricci, A. et al., JCS(Pl), 2283; Pearson, W.H. and Stevens, E.P., S,
904(1993).
/
R
R 3 SnLi, THF, -78°C
/
R
A r N = /
ί
», A i N = ^
Cl
SnR 3
16-86 %
VI.G-2 Maguire, M.P. et al., JMC, 37, 2129; Iwao, M., Watanabe, M. et
al., H, 38, 1717; Salituro, F.G. et al., JMC, 37, 334.
A v
(Me 3 Sn) 2 , Pd(PPh 3 ) 4 , dioxane ^
A r X
(LiClifX = OTf)
*
Ar-SnMe 3
X = Br,OTf
2 6 "
9 9 %
VI.G-3 Warner, B.P. and Buchwald, S.L., JOC, 59, 5822.
R . S iMe 3
(B»3Sn) 2 Q, TBAF, THF, 6 0 ° ^ R . S n B l l 3
95-99 %