S 
a geo-b-ore —p_ sto-b-ort 
H OH OH 

HO-P-OEt zto-H-on 
by OH 4 
Y 
H3POy, i 
ye ROR Rp ee ten tele 
ca ahs reo-b ore EtO-P-OEt " 
OH ! 
— —>} — >» i 
NO» U NO» NO, 3 
| 
me Paraoxon p-Nitrophenol 
0 
it 
9 
EtO-P-OEt EtO-P-OEt 
Q 
Eto- SG -OEt EtO-P-OEt 
ime SG 
Q 
EtS-P-OEt 
0 e 4 
“ze 
Ho 
p-Aminophenol 
HY ‘i 
1 
zco-f -OH ————————Sw> -s«ECO-P-OH - EtO-P-OH ~ H3P0, 
s Et H 
135 
