DIFLUOROMALONYL FLUORIDE synthesis

7synthesis methods

Product Name:DIFLUOROMALONYL FLUORIDE
CAS Number:5930-67-6
Molecular formula:C3F4O2
Molecular Weight:144.02

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Yield:5930-67-6 80.3%

Reaction Conditions:

with aluminum (III) chloride;1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

Steps:

1 Example 1

This example proposes a preparation method of fluorine-containing dibasic acid fluoride.The fluorine-containing dicarboxylic acid represented by the following formula (I) is used as a raw material,HOOC-CF₂-COOH (I);The fluorine-containing alkyl amine compound represented by the following formula (II) is a fluorinating reagent,F-CHF-CF₂-N (CH₃)₂(II);Under the action of Lewis acid catalyst (such as aluminum trichloride), the fluorination reaction takes place, and the fluorine-containing dibasic acid fluoride shown in the following formula (III) is obtained:FOC-CF₂-COF (III).In the above preparation process, a solid Lewis acid catalyst with a particle size of 50 mesh is used, and its dosage is 0.2% of the mass of the fluorinating reagent.The molar amount of the fluorinating reagent is 4 times the molar amount of the fluorine-containing dicarboxylic acid of the raw material, and the prepared content of the fluorine-containing dicarboxylic acid fluoride is 88.7%, and the yield is 80.3%.

References:

CN111333500,2020,A Location in patent:Paragraph 0024-0026