Preparation method for producing dialkyl chlorophosphate reagent from polyethylene glycol

A technology of dihydrocarbyl chlorophosphate and polyethylene glycol, which is applied in the fields of chemical instruments and methods, compounds of Group 5/15 elements of the periodic table, organic chemistry, etc., and can solve the problem of long reaction time, incomplete reaction, and difficult product Purification and other issues, to achieve the effect of short reaction time

Inactive Publication Date: 2017-03-22
江苏海阔生物医药有限公司
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AI-Extracted Technical Summary

Problems solved by technology

[0004] The preparation method of prior art uses acetonitrile or toluene as solvent, produces unnecessary liquid waste; The reaction process needs to be heated, and the reaction t...
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Abstract

The present invention provides a preparation method for producing a dialkyl chlorophosphate reagent from polyethylene glycol. The preparation method comprises: adding a preset amount of polyethylene glycol to a reaction bottle, replacing the air in the reaction bottle with an inert gas, cooling to a preset temperature, adding trisodium phosphate to the reaction bottle in a dropwise manner, diluting with a preset amount of an anhydrous solvent when the reaction is completed, filtering the product, and concentrating the product to obtain the dialkyl chlorophosphoric acid. According to the present invention, the reaction can be completely performed without any solvents in the dialkyl chlorophosphate preparation process, the reaction time is short, and the liquid waste cannot be generated; and the obtained product has the sufficient purity under the normal circumstance, the general organic synthesis requirement can be met, and the further distillation can be performed if the purity does not meet the requirement.

Application Domain

Group 5/15 element organic compounds

Technology Topic

SolventOrganic synthesis +8

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  • Preparation method for producing dialkyl chlorophosphate reagent from polyethylene glycol

Examples

  • Experimental program(5)

Example Embodiment

[0039] Embodiment 1: Preferably in the present invention, the proportion of the polyethylene glycol is 50%; the proportion of the trisodium phosphate is 30%; and the proportion of the anhydrous solvent is 20%.

Example Embodiment

[0040] Embodiment 2: Preferably in the present invention, the polyethylene glycol accounts for 55% of the ingredients; the trisodium phosphate accounts for 25%; and the anhydrous solvents account for 20%.

Example Embodiment

[0041] Embodiment 3: Preferably in the present invention, the polyethylene glycol accounts for 60% of the ingredients; the trisodium phosphate accounts for 20%; the anhydrous solvents account for 20%.

PUM

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