Reaction equation
[F:1][C:2]([F:13])([F:12])[C:3]([F:11])([F:10])[C:4]([F:9])([F:8])[C:5]([OH:7])=[O:6].[CH3:14]O>>[CH3:5][OH:6].[F:1][C:2]([F:12])([F:13])[C:3]([F:10])([F:11])[C:4]([F:8])([F:9])[C:5]([O:7][CH3:14])=[O:6]Participants
3
Procedure
In the specific embodiment herein described employing methanol and heptafluorobutyric acid as reactants, distillation of the resulting esterification reaction admixture results in a methanol/methyl heptafluorobutyrate azeotrope characterized by a boiling point of about 56-58° C. at substantially atmospheric pressure. This azeotrope also is characterized by about 78-80 weight percent methyl heptafluorobutyrate and correspondingly about 22-20 weight percent methanol. It is noted that the specific azeotrope of my discovery is a minimum boiling azeotrope boiling at a temperature substantially below both the boiling point of methanol, 65° C., and of methyl heptafluorobutyrate, 80° C.
Workup
- distillationdistillation of the resulting esterification reaction
Sources & evidence
- ORD record
- ord-7210e2d2bbc54c30b02122ab382e24c8
- Source dataset
- uspto-grants-1980_10
- Patent number
- US04229263
Linked notes
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