Deiodinating Fluorinated Compounds with Peroxide
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Solution Overview
Problem
Existing methods fail to efficiently convert C-I bonds in iodine-containing compounds with the -CFRf-I group to C-H bonds, leading to instability in fluorine-containing compounds due to remaining iodine, which can cause degradation or coloration upon exposure to light or heat.
Innovation Solution
A method involving deiodinating treatment using an organic peroxide and a hydrogen-containing compound in the presence of a fluorine-containing solvent, effectively converting C-I bonds to C-H bonds, thereby stabilizing the fluorine-containing compounds without requiring ultraviolet radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional deiodinating methods (light, heat, radical initiator with isopentane, toluene, carbon tetrachloride) are used to convert C-I bonds to C-H bonds, then iodine atoms can be removed from polymers, but the method is not effective for iodine-containing compounds having -CFRf-I groups and requires complex equipment or conditions
Solution Approach 1:
The invention changes the chemical parameters by introducing an organic peroxide and a specific hydrogen-containing compound (formula 3) as reagents, and controlling the molar ratio of these reagents to the iodine-containing compound. This chemical parameter change enables efficient deiodination of -CFRf-I groups without requiring ultraviolet radiation equipment, thus resolving the contradiction between reliability improvement and device complexity reduction
Solution Approach 2:
The invention replaces the mechanical/physical system (ultraviolet radiation equipment) with a chemical system (organic peroxide and hydrogen-containing compound reaction). This substitution eliminates the need for complex ultraviolet radiation equipment while achieving the same deiodination effect, thereby resolving the contradiction between improving compound stability and reducing device complexity
2Productivity
If iodine atoms remain in the fluorine-containing compound, then the compound can be obtained from synthesis, but the compound becomes unstable and undergoes degradation or coloration upon exposure to light or heat
Solution Approach 1:
The invention performs preliminary deiodinating treatment on the iodine-containing compound immediately after synthesis. By applying the organic peroxide and hydrogen-containing compound treatment right after synthesis, the method removes iodine atoms before they can cause degradation or coloration, thus maintaining both productivity (by not requiring lengthy additional stabilization steps) and stability (by preventing degradation)
Solution Approach 2:
The invention converts the harmful effect of remaining iodine atoms (which cause instability and degradation) into a beneficial process by using the iodine atoms as reaction sites for the organic peroxide and hydrogen-containing compound. The deiodinating treatment transforms the harmful iodine-containing groups into stable C-H bonds, thereby converting the potential harm into a stabilization benefit while maintaining synthesis efficiency
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method efficiently reduces iodine atom content in fluorine-containing compounds, enhancing their stability and preventing degradation or coloration, making it possible to obtain stabilized fluorine-containing compounds with reduced iodine content.
Implementation Method 1
a method for producing a fluorine-containing compound which has the following construction [1] A method for producing a fluorine-containing compound having an iodine atom content reduced than the following iodine-containing compound, which comprises subjecting an iodine-containing compound having a group represented by the following formula (1i) or a group represented by the following formula (2i), to deiodinating treatment in the presence of an organic peroxide and a hydrogen-containing compound
Implementation Method 2
to convert the C-I bond in the polymer to a C-H bond or C-CI bond
Data Source
AI summary
The purpose of the present invention is to obtain a fluorine-containing compound which is easily stabilized without irradiation of ultraviolet light, by efficiently converting a C-I bond in an iodine-containing compound having a group represented by -CFRf-I (wherein Rf is a fluorine atom or a perfluoroalkyl group) to a C-H bond. A method for producing a fluorine-containing compound having an iodine atom content reduced than the following iodine-containing compound, which comprises subjecting an iodine-containing compound having a group represented by -CFRf-I (wherein Rf is a fluorine atom or a perfluoroalkyl group) to deiodinating treatment in the presence of an organic peroxide and a hydrogen-containing compound having a group represented by -CHR1-CHR2-CHR3- (wherein R1, R2 and R3 are each independently a hydrogen atom or an alkyl group).