96
ORGANIC SYNTHESIS—1995
LJL Cvclopropanations
Τ.Ρ.ΐ. Carhene or Carhenoid Additions to a Multiple Rond
I.D.1-1 Warkentin, J. et al, JOC, 59, 4090.
O
% -
Ph
NPh
Ph O
j^
CH2=CHCH2CH2Br
60%
I.D.1-2 Zefirov, N.S. et al., JOC, 59, 4087; Seitz, WJ. and Hossain,
M.M., TL, 35, 7561; Gallos, J.K. et al., JCS(Pl), 611; Kanemasa, S. et al.
TL, 35, 7985; Hofmann, B. and Reissig, H.-U., CB, 127, 2315;
Nishiyama, H. et al., JACS, 116, 2223; Davies, H.M.L. et al., JOC, 59,
4535; Rodios, N.A. et al., 7\ 50, 13023.
CH 2 N 2 , Pd(OAc) 2
25%
I.D.1-3 Charette, A.B. et al., TL, 35, 513; Taguchi, T. et al., JOC, 59,
97; Kobayashi, S. et al., CL, 177 and TL, 35, 7045; Theberge, C.R. and
Zercher, C.K., TL, 35, 9181; see also: Charette, A.B. and Juteau, H.,
JACS, 116, 2651.
CH 2 I 2 , Et 2 Zn
'BuOMe
0°C, 6h
BnO
BnO
BnO
97%
(13.2:1)