The monomers of the invention are prepared in {HEAD ~ good yield} from {TAIL ~ readily available starting materials} 
from
The monomers of the invention are prepared in { HEAD ~ good yield } from { TAIL ~ readily available starting materials }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL