Furthermore, it facilitates {HEAD ~ the simultaneous distillation} of {TAIL ~ the more volatile alkanol} by product from the reaction mixture 
Furthermore , it facilitates { HEAD ~ the simultaneous distillation } of { TAIL ~ the more volatile alkanol } by product from the reaction mixture
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH