Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1983-12-15
1985-08-20
Trousof, Natalie
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
C07F 952
Patent
active
045363510
ABSTRACT:
The disclosure relates to a process for making aryldichlorophosphanes of the general formula ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 being identical or different each stand for a hydrogen atom, an alkyl group having from 1 to 8 carbon atoms, a halogen atom, an aryl group of an aryloxy group by reacting an arene of the general formula ##STR2## in which R.sub.1, R.sub.2 and R.sub.3 have the meanings given above, with at least 4 mols phosphorus (III) chloride per mol arene in the presence of aluminum chloride, boiling the mixture over a period of several hours and subsequently precipitating the aluminum chloride by adding a complexing agent, filtering and distillatively working up the filtrate. More particularly, the disclosure provides for 0.05 to 0.9 mol aluminum chloride to be used per mol arene and for 1-3 mols finely ground alkali metal chloride to be used as the complexing agent per mol aluminum chloride.
REFERENCES:
patent: 2276492 (1942-03-01), Jolly et al.
patent: 3582293 (1971-06-01), Odenweller
patent: 3584043 (1971-06-01), Maier
patent: 3829479 (1974-08-01), Kent et al.
Houben-Weyl, Methoden der Organischen Chemie, 4th Ed., vol. XII/1, ("Organic Phosphorus Compounds", Part 1), Gerog Thieme Verlag, Stuttgart, 1963, pp. 294 and 318.
Hendriksen L.
Hoechst Aktiengesellschaft
Trousof Natalie
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