Further, it is preferred that {HEAD ~ the crystallization} from the crude polar vinyl compound be performed in {TAIL ~ the presence} of an alcohol or a basic compound 
Further , it is preferred that { HEAD ~ the crystallization } from the crude polar vinyl compound be performed in { TAIL ~ the presence } of an alcohol or a basic compound
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH