The process 1, wherein the first stage is undertaken with equimolar quantities of {HEAD ~ potassium xanthate} and the sodium salt of {TAIL ~ 2 bromopropionic acid} 
The process 1 , wherein the first stage is undertaken with equimolar quantities of { HEAD ~ potassium xanthate } and the sodium salt of { TAIL ~ 2 bromopropionic acid }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL