Method for improving preservation stability of 2,2-difluoroacetaldehyde

A method for improving preservation stability of 2,2-difluoroacetaldehyde according to the present invention include at least: a first step of forming a "2,2-difluoroacetaldehyde-alcohol composite system" in which a 2,2-difluoroacetaldehyde hemiacetal coexists with an excess alcohol, where...

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Bibliographic Details
Main Authors Akiba Shinya, Takeda Masaaki, Nadano Ryo
Format Patent
LanguageEnglish
Published 19.12.2017
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:A method for improving preservation stability of 2,2-difluoroacetaldehyde according to the present invention include at least: a first step of forming a "2,2-difluoroacetaldehyde-alcohol composite system" in which a 2,2-difluoroacetaldehyde hemiacetal coexists with an excess alcohol, wherein the total molar amount of the alcohol is 1.15 to 4.00 times the total molar amount of 2,2-difluoroacetaldehyde; and a second step of storing, in a storage container, the "2,2-difluoroacetaldehyde-alcohol composite system" formed in the first step. It is possible by this method to suppress the conversion of the 2,2-difluoroacetaldehyde hemiacetal to a dimer and maintain the original aldehyde activity of the target compound with less composition change over a long term.
Bibliography:Application Number: US201515326808