246
ORGANIC SYNTHESIS—1995
IV.E-9 Pirrung, M.C. et al, TL, 35, 6229.
Rh 2 (OAc) 4
IV.E-10 Malacria, M. et al., SL, 366; see also: Rai, R. and Collum, D.B.,
TL, 35, 6221; Schinzer, D. et al, TL, 35, 5853; Torti, S. et al., BCJ, 67,
595; Cossy, J. et al., TL, 35, 1205 and 8161; Burke, S.D. and Jung, K.W.,
TL, 35, 5837 and 5841; Parker, K.A. and Fokas, D., JOC, 59, 3927 and
3933.
^ , A ~ V " *
Bu
3SnH
0~"
VTOI
-
x^— Pv
p
-
To1
AIBN, PhH, Δ
(.
}
N j /
79-94%
R R
similar radical cyclizations upon alkenes or alkynes
Λ
40-96% de
R R
IV.E-11 Walkup, R.D. et al., JOC, 59, 3433 and TL, 35, 8545; Marshall,
J.A. and Bennett, CE., JOC, 59, 6110; Garcia, M.A., Meou, A. and Brun,
P., SL, 911.
.OMPM
jOSiMe,
1. Hg(OCOCF 3 ) 2
CH 2 C1 2 ,25^
^OMPM H 3 C(
2. CO(latm)
y
CH 3 OH
10% PdCl 2
300% CuCI 2
CH 3 C(OEt) 3
57%