Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus esters
Patent
1991-07-01
1992-08-04
Lee, Mary C.
Organic compounds -- part of the class 532-570 series
Organic compounds
Phosphorus esters
558140, C07F 96574, C07F 914, C07F 9146
Patent
active
051360756
ABSTRACT:
Phosphorus compounds having at least one chlorine, bromine or iodine bonded directly to phosphorus are transhalogenated with fluorine by reaction with anhydrous hydrogen fluoride in an inert solvent, e.g., xylene, methylene chloride, in a manner such that said anhydrous hydrogen fluoride is added to said phosphorus compound at a rate such that said anhydrous hydrogen fluoride reacts with said phosphorus compound without the accumulation of an amount of unreacted anhydrous hydrogen fluoride which is sufficient to cause substantial decomposition of the desired fluorophosphorus product. A catalytic amount of a pyridine-type compound may optionally included in the reaction.
REFERENCES:
patent: 5049691 (1991-09-01), Burt et al.
Ao Meng-Sheng
Burt Edward A.
Burton Lester P. J.
Stahly Barbara C.
Ambrose Michael G.
Ethyl Corporation
Hogan Patricia J.
Lee Mary C.
Odenweller Joseph D.
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