62
ORGANIC SYNTHESIS—1995
I.A.7.b.3. Other Conjugate Additions
I.A.7.b.3-l Yus, M. et al., Γ, 50, 5130; Figadere, B. et al., TL, 35, 883;
Hosomi, A. et al., TL, 35, 9605; Henry, K.J., Jr. and Fraser-Reid, B., JOC,
59, 5128; Pattenden, G. et al., TL, 35, 2413; see also: Mulzer, J. et al.,
LA, 531.
n i
r\
D 2
^Y
Y
^ X 0 2 M e BuaSnCl, NaBH 4
AIBN, EtOH
0°C to 20°C
(X .R
2
Xi
MeO 0 , C ^ ^ R
3
22-72%
similar radical cyclizations also reported
I.A.7.b.3-2 Mori, M. et al., TL, 35, 2035.
TMSSnBu 3
►
CsF
83%
ORGANIC SYNTHESIS—1995
I.A.7.b.3. Other Conjugate Additions
I.A.7.b.3-l Yus, M. et al., Γ, 50, 5130; Figadere, B. et al., TL, 35, 883;
Hosomi, A. et al., TL, 35, 9605; Henry, K.J., Jr. and Fraser-Reid, B., JOC,
59, 5128; Pattenden, G. et al., TL, 35, 2413; see also: Mulzer, J. et al.,
LA, 531.
n i
r\
D 2
^Y
Y
^ X 0 2 M e BuaSnCl, NaBH 4
AIBN, EtOH
0°C to 20°C
(X .R
2
Xi
MeO 0 , C ^ ^ R
3
22-72%
similar radical cyclizations also reported
I.A.7.b.3-2 Mori, M. et al., TL, 35, 2035.
TMSSnBu 3
►
CsF
83%