FIELD: chemical technology.
SUBSTANCE: invention relates to a method for synthesis of 2,4-dichloro-2-dichlorophosphorylbutanoic acid chloroanhydride of the formula: 
. Method involves interaction of phosphorus pentachloride with γ-butyrolactone in inert organic solvent medium followed by formation of intermediate adduct of phosphorus pentachloride and γ-butyrolactone that then is treated with sulfur-containing compound up to preparing the end product. As a sulfur-containing compound the method involves using sulfuryl chloride, and treatment is carried out at temperature above 25°C. Method provides simplifying process and enhanced yield of the end product.
EFFECT: improved preparing method.
1 ex
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|---|---|---|---|
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