Preparation of methyl isopropylideneaminooxyacetoxyacetate

Details Preparation of methyl isopropylideneaminooxyacetoxyacetate Preparation of methyl isopropylideneaminooxyacetoxyacetate

C - Chemistry, Metallurgy

07

C

C07C 251/60 (2006.01) C07C 249/08 (2006.01) C07C 249/12 (2006.01)

Patent

CA 2161063

Process for preparing methyl isopropylideneaminooxyacetoxyacetate I Image I by reacting in an integrated process, without isolation of inter- mediates, a) acetone with hydroxylammonium sulfate and sodium hydroxide solution to give acetone oxime, the reaction being performed in the presence of toluene and/or the acetone oxime being extracted from the reaction mixture with toluene, b) treating the toluene solution thus obtained with sodium hydroxide solution and removing water, c) exchanging toluene for a dipolar aprotic solvent by distilla- tion, d) reacting the crystal mash thus obtained with the sodium salt of chloroacetic acid to give the sodium salt of isopro- pylideneaminooxyacetic acid and then treating the reaction mixture with methyl chloroacetate and e) isolating the methyl isopropylideneaminooxyacetoxyacetate in a manner known per se.

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