0 Br Br 
i 1 ! 
CH.-O-P - 0C -C- Cl | 
3 [ 4 
OCH, H Cl 
Dibrom 
0 
: % Gl " Cl 
CH.O-P-OH + C-C-Br CH .-O-—P-O-CH=C 
7 1 Hq 3 I Nc1 
OCH, CH, 
0 ,0O-Dimethy1-2 ,2-dichlorovinyl 
phosphate (DDVP) 

Dichloroacetaldehyde te 
1 
f ¥ocue. 
CH.,0H + CH0- OH CEA ei AC + CH 0H 
H H 
y O-methyl-2 ,2-dichlorovinyl 
phosphate 
0 
CH.OH + or Gr 
; H 
146 
