


Br 
CH,-N | 
kN 
t 
CH, 
(I) 
hv 
O 
7] 
CH.-N 
3 oR 
Br® od | > 
N 
' 
CH, 
(V) 
| 00, 
O 
1 
-l 
t 
CH3 
(III) 
H 
M 
nef Hs 
‘iC 
CH3 
(VL) 
, / 
CH,-N-C 0 
3 w 
| CH,NHz + NH, + CH3-C 
CH3-N-C=0 H 
H 
EE) 
336 
