PROCESS FOR THE PREPARATION OF THE ALKOXYAMINE 2-METHYL-2-`N-(DIETHOXYPHOSPHORYL-2,2-DIMETHYLPROPYL)-AMINOXY!PROPIONIC ACID

摘要

The present invention relates to a process for the preparation of the alkoxyamine 2-methyl-2-[N- (diethoxyphosphoryl-2,2-dimethylpropyl)aminoxy]propionic acid or of its salts comprising a stage of saponification of an azo compound in the presence of a base, a stage of photolysis of the salt resulting from the saponification stage in the presence of N-(tert-butyl)1-diethylphosphono-2,2-dimethylpropyl nitroxide and optionally a stage of acidification of the salt of the alkoxyamine obtained on conclusion of the photolysis stage. The alkoxyamine or its salts can be used as radical polymerization initiators.