OXIDATIONS
Π.Β.1-17 Almeida, W.P. and Correia, C.R.D., TL, 35, 1367.
181
MeO
OAc
Ac 2 0
H 2 S0 4
OBn
rt
MeO
OBn
II.B.1-18 Kita, Y. et al., TL, 35, 9733.
m ? H™
R
Znl 2 , THF
N > ς "p-Toi
TBSO *R
70%
>99 % e.e.
asymmetric Pummerer type rearrangement
by O-silylated ketene acetals
II.B.2 C-H -> C-Hal
II.B.2-1 Martens, T. et al., TL, 35, 6879.
N C V / N - - /
Br~/Cl
Ph,.
V\>
NCs^/N-^R ^
a
22-95 %
Π.Β.1-17 Almeida, W.P. and Correia, C.R.D., TL, 35, 1367.
181
MeO
OAc
Ac 2 0
H 2 S0 4
OBn
rt
MeO
OBn
II.B.1-18 Kita, Y. et al., TL, 35, 9733.
m ? H™
R
Znl 2 , THF
N > ς "p-Toi
TBSO *R
70%
>99 % e.e.
asymmetric Pummerer type rearrangement
by O-silylated ketene acetals
II.B.2 C-H -> C-Hal
II.B.2-1 Martens, T. et al., TL, 35, 6879.
N C V / N - - /
Br~/Cl
Ph,.
V\>
NCs^/N-^R ^
a
22-95 %