Process for the preparation of alkali metal and alkaline...

Details Process for the preparation of alkali metal and alkaline... Process for the preparation of alkali metal and alkaline...

C - Chemistry, Metallurgy

07

F

260/501.6

C07F 9/30 (2006.01)

Patent

CA 1242215

Abstract of the disclosure: The alkali metal and alkaline earth metal salts of diarylphosphinic acids are prepared by reacting tri- arylphosphane oxides with alkali metal or alkaline earth metal hydroxides in a molar ratio of about 1:1 or 0.5, in the presence of water, under elevated pressure and at elevated temperature. In this manner, the alkali metal or alkaline earth metal salts of diphenylphosphinic acid are formed from triphenylphosphane oxide, which is the preferably used triarylphosphane oxide. Other salts or the corresponding free diaryl- phosphinic acids can, if desired, be obtained from the alkali metal and alkaline earth metal salts in a conven- tional manner. The products are principally intermedi- ates in various fields.

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