Production of alpha-chloro-alpha-oximino-4-hydroxyacetophenone

Details Production of alpha-chloro-alpha-oximino-4-hydroxyacetophenone Production of alpha-chloro-alpha-oximino-4-hydroxyacetophenone

C - Chemistry, Metallurgy

07

C

260/538.5

C07C 259/02 (2006.01)

Patent

CA 2008015

ABSTRACT .alpha.-chloro-.alpha.-oximino-4-hydroxyacetophenone is prepared by reacting 4-hydroxyacetophenone with an alkyl nitrite and hydrogen chloride wherein the amount of hydrogen chloride is carefully controlled to limit the amount thereof to about 0.1 to 6 moles of hydrogen chloride per mole of 4-hydroxyacetophenone until at least one equivalent of the alkyl nitrite is reacted. Subsequent to the reaction of the one equivalent of alkyl nitrite, at least 1 mole of hydrogen chloride per mole of initially charged 4-hydroxyacetophenone is added to the reaction medium.

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