METHOD FOR PREPARING BIS-(CHLOROOXYIMINO)-ACETONE Russian patent published in 2007 - IPC C07C251/36 C07C249/12 

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to an improved method for synthesis of bis-(chlorooxyimino)-acetone. The chlorination reaction is carried out in simultaneous dosing calcium chloride, concentrated hydrochloric acid and 30% hydrogen peroxide saturated preliminary with calcium chloride to dioxyiminoacetone suspension in saturated solution in the ratio water : calcium chloride = (1.2-1.3):1 (in moles) in the reaction mass, or concentrated hydrochloric acid and 30% hydrogen peroxide with the retained ratio water : calcium chloride = (1.6-1.7):1 (in moles) and in maintaining the molar ratio dioxyiminoacetone : hydrochloric acid : hydrogen peroxide = 1:(2.0-2.1):(2.2-2.5) (in moles), respectively. Method is simple and provides preparing the end product with the high yield - 95.7%.

EFFECT: improved method of synthesis.

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