Three additional advantages flow from {HEAD ~ the ease} of separating {TAIL ~ excess metallating reagents} from the metallated crystalline polymer 
of separating
Three additional advantages flow from { HEAD ~ the ease } of separating { TAIL ~ excess metallating reagents } from the metallated crystalline polymer
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH