78
ORGANIC SYNTHESIS—1995
I.B.2.C-1 Langlois, N. et al., TL, 35, 6673.
O
Î
Me 2 N
O
N /^C0 2 Bn -J
I
Boc
■*►
O
N
I
Boc
60%
C0 2 Bn
I.B.2.C-2 Majewski, M. and Lazny, R., TL, 35, 3653.
Li
MeN'
,Cbz
1. Lic'-^^V^N-i
,
e.e. = 92%
I.B.2.C-3 Troxler, T. and Scheffold, R., HCA, 77, 1193.
cob(I)aIamin
^
81-99%
e.e. = <86%
ORGANIC SYNTHESIS—1995
I.B.2.C-1 Langlois, N. et al., TL, 35, 6673.
O
Î
Me 2 N
O
N /^C0 2 Bn -J
I
Boc
■*►
O
N
I
Boc
60%
C0 2 Bn
I.B.2.C-2 Majewski, M. and Lazny, R., TL, 35, 3653.
Li
MeN'
,Cbz
1. Lic'-^^V^N-i
,
e.e. = 92%
I.B.2.C-3 Troxler, T. and Scheffold, R., HCA, 77, 1193.
cob(I)aIamin
^
81-99%
e.e. = <86%