Fluorophosphines Containing Phosphorus-Oxygen Bonds Fluorophosphites

Fluorophosphines Containing Phosphorus-Oxygen Bonds (Fluorophosphites) 

Three independent syntheses of joi-oxobisdifluorophosphine (b.p. —18.3°C,m.p.—132,l°to—131.8°C) were reported almost simultaneously (274, 192, 272). Parry and co-workers (274) obtained F2POPF2 in 72% yield by reacting cuprous oxide and the newly synthesized difiuoro-iodophosphine (Section IV). Lustig et al. (192) identified the same 

Riess and Van Wazer (272) were able to characterize FgPOPFg in the products from the reaction between P Og and BF3 Et20. 

Hydrogen bromide and p,-oxobisdifluorophosphine react at 25°C in the vapour phase to give bromodifluorophosphine and OPF2H (50). A 

Lustig (194) has described syntheses of 2-iodo- and 2-bromo()a-oxo-difluorophosphine)hexafiuoropropane, (CF3)2C(OPF2)X (X = Br, I) from hexafluoroacetone and the appropriate difluorohalogenophosphine PF2X. The mechanism is believed to involve the 1,3-dipolar intermediate 

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VI. Fluorophosphines Containing Phosphorus-Oxygen Bonds (Fluorophosphites)... 

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