Fluorinated Alkoxyvinyl Ether Synthesis via Base-Alcohol Addition
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Solution Overview
Problem
There is a lack of disclosure in the scientific literature on fluorinated chemical species with the general structure RfC(OR)═CHRf′, where Rf′ has at least two carbon atoms, and no basic alcohol reaction pathway to prepare such species.
Innovation Solution
A method for preparing alkoxyvinyl ethers involving the reaction of RfCFHCFHRf′+KOH/ROH or RfCF═CHRf′+KOH/ROH to form RfC(OR)═CHRf′, where Rf and Rf′ are perfluoro functional groups and R is an alkyl group, with specific combinations of Rf, Rf′, and R defined.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional alcohol reaction pathways are used to prepare fluorinated chemical species, then the reaction pathway is well-established and easy to implement, but fluorinated chemical species with the structure RfC(OR)═CHRf′ (where Rf′ has at least two carbon atoms) cannot be prepared
Solution Approach 1:
The patent changes the reaction parameters by using specific perfluorinated olefins with at least two carbon atoms in the Rf′ group and controlling the alcohol reaction conditions to achieve the novel structure RfC(OR)═CHRf′, thereby expanding structural diversity while maintaining ease of manufacture through established alcohol reaction pathways
2Adaptability or versatility
If fluorinated chemical species with structure RfC(OR)═CHRf′ (where Rf′ has at least two carbon atoms) are synthesized, then new chemical structures with potential applications are created, but no basic alcohol reaction pathway exists to prepare them
Solution Approach 1:
The patent modifies reaction parameters including the use of specific perfluorinated olefins (RfCF═CHRf′ where Rf′ has at least two carbon atoms), alcohol reagents, and reaction conditions to enable the formation of the novel C(OR)═CHRf′ structure through alcohol reaction pathways
Solution Approach 2:
The patent employs intermediates in the alcohol reaction pathway that facilitate the formation of the novel fluorinated chemical species structure, allowing the reaction to proceed through stable intermediate species that can be converted to the final product
3Object-affected harmful factors
If fluorinated materials with structure RfC(OCH3)═CFRf′ are used as solvents, then low toxicity and low global warming potential are achieved, but the structure is limited and does not include RfC(OR)═CHRf′ species
Solution Approach 1:
The patent changes the structural parameters by introducing the RfC(OR)═CHRf′ structure where Rf′ has at least two carbon atoms, while maintaining the fluorinated character that provides low toxicity and low global warming potential, thereby expanding structural variety without compromising environmental benefits
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
The resulting alkoxyvinyl ethers exhibit reduced flammability, atmospheric lifetime, and increased polarity, making them suitable for applications as solvents, heat transfer media, and dielectric materials.
Implementation Method 1
RfCF═CHRf′+KOH/ROH→RfC(OR)═CHRf′
Data Source
AI summary
An alkoxyvinyl ether is disclosed having the chemical structure RfC(OR)═CHRf′, wherein Rf is an at least partially fluorinated functional group having at least one carbon atom, Rf′ is an at least partially fluorinated functional group having at least two carbon atoms, and R is a functional group. A method for preparing an alkoxyvinyl ether is disclosed, comprising RfCFHCFHRf′+KOH/ROH→RfC(OR)═CHRf′, wherein Rf is a perfluoro functional group, Rf′ is a perfluoro functional group, and R is an alkyl functional group. Another method for preparing an alkoxyvinyl ether is disclosed, comprising RfCF═CHRf′+KOH/ROH→RfC(OR)═CHRf′, wherein Rf is a perfluoro functional group, Rf′ is a perfluoro functional group, and R is an alkyl functional group.