reacting {HEAD ~ an equimolar mixture} of butyllithium and a F phenyl phosphonium salt having the formula C6 F5 CH2 PBr within an inert atmosphere at about room temperature for a period of {TAIL ~ about 0.5 to 3 hours} to obtain a product having the formula C6 F5 CH═P3  
reacting { HEAD ~ an equimolar mixture } of butyllithium and a F phenyl phosphonium salt having the formula C6 F5 CH2 PBr within an inert atmosphere at about room temperature for a period of { TAIL ~ about 0.5 to 3 hours } to obtain a product having the formula C6 F5 CH ═ P3
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH