Perfluoro(2-methyl-3-oxahexanoyl) fluoride,(Hexafluoropropen oxide dimer) synthesis

10synthesis methods

Product Name:Perfluoro(2-methyl-3-oxahexanoyl) fluoride,(Hexafluoropropen oxide dimer)
CAS Number:125037-08-3
Molecular formula:C6F12O2
Molecular Weight:332.04

Propanoic acid, 2,3,3,3-tetrafluoro-2-(1,1,2,2,3,3,3-heptafluoropropoxy)-, 1,1,2,3,3,3-hexafluoro-2-(1,1,2,2,3,3,3-heptafluoropropoxy)propyl ester

296758-59-3
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Perfluoro(2-methyl-3-oxahexanoyl) fluoride,(Hexafluoropropen oxide dimer)

125037-08-3
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Yield:125037-08-3 99%

Reaction Conditions:

with potassium fluoride at 70;Product distribution / selectivity;

Steps:

4

[0093] Into a stainless steel autoclave having a capacity of 2L and equipped with a stirrer, 1800 g of the crude liquid of compound (1b) obtained in Example 2 and further KF powder (30 g) prepared by a spray drying method, were charged and heated to 70 DEG C with stirring. When the temperature reached a prescribed level, the crude liquid of compound (1b) was continuously fed to the reactor at a rate of 115 g/hr. A generated gas was continuous withdrawn through a jacketed stainless steel column provided at an upper portion of the reactor, heated to 60 DEG C and captured by a dry ice trap. From the weight of the captured product and the analysis by GC, it was found that CF3CF2CF2OCF(CF3)COF (compound (4b)) was formed at 110 g/hr. The yield of compound (4b) was 99%.

References:

EP1352892,2003,A1 Location in patent:Page/Page column 14

428-59-1 Synthesis