284
ORGANIC SYNTHESIS— 1995
IV.K.lb.
6 Membered Heterocycles with 2 N's
IV.K.lb-1 Boger, D.L. et al., JOC, 59, 4950 and JACS, 116, 82 and
5619.
NH-HCI
I
I
DMF
|
T
OL 2
+
Y "^^
R
2
C0 2 Et
44-85% C0 2 Et
IV.K.lb-2 Poindexter, G.S. et al., TL, 35, 7331.
sK ^^^ .NHR
, Ν ς - ^ - ^ *
0
ψ
^ ^
HBr/HOAc
H
^ ^
\
I
►
23-91%
IV.K.lb-3 Okada, Y. et al, TL, 35, 1231.
H
||
I
I
6NHC1
BOC
T H T
refluX
^ r "Me
R
°
R 65-90%
IV.K.lb-4 Martinez, A.G. et al., SL, 559.
ÏMe
R>
-A· *
Tf 2 0
MeSCN
—
CH 2 C1 2
"1ST ^SMe
40-80%
ORGANIC SYNTHESIS— 1995
IV.K.lb.
6 Membered Heterocycles with 2 N's
IV.K.lb-1 Boger, D.L. et al., JOC, 59, 4950 and JACS, 116, 82 and
5619.
NH-HCI
I
I
DMF
|
T
OL 2
+
Y "^^
R
2
C0 2 Et
44-85% C0 2 Et
IV.K.lb-2 Poindexter, G.S. et al., TL, 35, 7331.
sK ^^^ .NHR
, Ν ς - ^ - ^ *
0
ψ
^ ^
HBr/HOAc
H
^ ^
\
I
►
23-91%
IV.K.lb-3 Okada, Y. et al, TL, 35, 1231.
H
||
I
I
6NHC1
BOC
T H T
refluX
^ r "Me
R
°
R 65-90%
IV.K.lb-4 Martinez, A.G. et al., SL, 559.
ÏMe
R>
-A· *
Tf 2 0
MeSCN
—
CH 2 C1 2
"1ST ^SMe
40-80%