IV
SYNTHESIS OF HETEROCYCLES
IV.A. Oxiranes. Aziridines and Thiiranes
IV.A-1 Evans, D.A. et al., JACS, 116, 2742.
Ts
R
1
PhI=NTs
R
3
CuC10 4
D 2
f^^
30-95%
IV.A-2 Tardella, P.A. et al., T, 50, 11235.
TsONHC0 2 Et
R
R'
Cs 2 C0 3 or CaO
CH 2 CI 2 , rt
C0 2 Et
38-74%
IV.A-3 Michida, T. and Sayo, H., CPB, 42, 27.
-SNH 2
Ri
R
\ °
2N
~C~}~
s
;
NBS
NSAr
R i 62-72%
IV.A-4 Cha, J.K. et al., TL, 35, 3489.
EtO
TIPS
EtON^
52%
mxps
224