 an epihalohydrin, in {HEAD ~ a two phase mixed solvent} composed of water and {TAIL ~ an organic solvent} in the presence of a base and a phase transfer catalyst 
composed of
an epihalohydrin , in { HEAD ~ a two phase mixed solvent } composed of water and { TAIL ~ an organic solvent } in the presence of a base and a phase transfer catalyst
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH