Process for the preparation of aromatic phosphorus- chlorine...

Details Process for the preparation of aromatic phosphorus- chlorine... Process for the preparation of aromatic phosphorus- chlorine...

C - Chemistry, Metallurgy

07

F

260/537.6

C07F 9/34 (2006.01) C07F 9/42 (2006.01) C07F 9/44 (2006.01) C07F 9/46 (2006.01) C07F 9/52 (2006.01)

Patent

CA 1204451

- 18 - Abstract of the Disclosure Aromatic phosphorus-chlorine compounds, especi- ally diphenylphosphinyl chloride (C6H5)2P(O)Cl, phenyl- phosphonyl dichloride C6H5P(O)Cl2, dichlorophenylphos- phine C6H5PCl2 and chlorodiphenylphosphine (C6H5)2PCl, and the corresponding sulfur analogs, are obtained by reaction of aromatic phosphorus compounds, which contain oxygen or sulfur, of the formula I Image (I) in which X = O or S, and m = 1, 2 or 3, with phosphorus- chlorine compounds of the formula II (C6H5)3-nP Cln (II) in which n = 1, 2 or 3, at temperatures between about 330 and 700°C. Preferred starting materials are tri- phenylphosphine oxide (C6H5)3PO and phosphorus tri- chloride PCl3. The reaction products are mainly intermediates in a variety of special areas, such as the pharmaceuti- cals, plant-protection, dye and polymer sectors.

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