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