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