Process for the preparation of 2-chloroethanephosphonyl...

Details Process for the preparation of 2-chloroethanephosphonyl... Process for the preparation of 2-chloroethanephosphonyl...

C - Chemistry, Metallurgy

07

F

260/537.8

C07F 9/42 (2006.01)

Patent

CA 1304406

-1- ABSTRACT HOE 86/F 293 The invention relates to a process for the preparation of 2-chloroethanephosphonyl dichloride by reaction of an ester of 2-chloroethanephosphonic acid of the formula Image or Image or a mixture of the two esters with thionyl chloride at a temperature of 60 to 160°C. Phosphine oxides are employed as catalysts therein. The thionyl chloride is added to the initially introduced ester.

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