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