The process converts {TAIL ~ the major part} of {HEAD ~ the halide} in the organic halide to hydrogen halide 
The process converts { TAIL ~ the major part } of { HEAD ~ the halide } in the organic halide to hydrogen halide
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH