Process for preparing halogenated trialkyl phosphate esters

Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus esters

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C07F 909

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047147717

ABSTRACT:
A method of producing a halogenated trialkyl phosphate ester which comprises admixing a halogenated hydroxy compound containing a halogen selected from the group consisting of bromine, chlorine, iodine and mixtures thereof, a phosphorus oxyhalide containing a halogen selected from the group consisting of bromine, chlorine, iodine and mixtures thereof, a solvent suitable to dissolve the halogenated hydroxy compound and the phosphorus oxyhalide, said solvent being substantially inert to hydrogen halide, and a catalyst suitable to increase the polarity of the phosphorus oxyhalide, refluxing said admixture sufficiently to form a trialkyl phosphate ester precipitate, and recovering this precipitate.

REFERENCES:
patent: 1766720 (1930-06-01), Nicolai
patent: 1840335 (1932-01-01), Horst
patent: 2624750 (1953-01-01), Pechukas
patent: 2870192 (1959-01-01), Bonstedt
patent: 3324205 (1957-06-01), Carpenter et al.
patent: 3830886 (1974-08-01), Davis et al.
patent: 4046719 (1977-09-01), Stanaback
Derwert Abstract of Japanese, 7106865.
Zakharou et al., English Language Transtation from "Aka. Nauk. SSSR, Seriyakhim", No. 11 (1971), pp. 2503-2509.
Jackson et al., "Chem. Abst.", vol. 80, (1973), 97205h.
Kosolapoff, "Organophosphorus Cpds.", 1951, pp. 211-277.

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