Alkylamino Fluoroether Synthesis via Iodide Precursor Segmentation
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Solution Overview
Problem
Current methods for synthesizing fluoro polyoxo-alkylamines are inefficient, requiring multiple steps, special reagents, and environmentally unfriendly solvents, limiting their applicability for industrial-scale production and posing environmental concerns due to the use of perfluoroalkyl compounds.
Innovation Solution
A novel alkylamino group-terminated fluoroether compound is synthesized through the reaction of an iodide-terminated fluoroether with an alkylamine, allowing for flexibility in the molecular chain and industrial-scale production, using a process that avoids the need for special reagents and solvents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional multi-step oxidation and amination processes are used to synthesize fluoro polyoxo-alkylamines, then the target compound can be obtained, but the process requires multiple steps, special reagents, and chlorine-based solvents making it unsuitable for industrial scale synthesis
Solution Approach 1:
The invention divides the synthesis process into distinct functional segments: the fluoro polyoxaalkyl chain segment and the amino group segment. By using iodide-terminated fluoroether as a starting material that already contains the fluorinated polyoxaalkyl segment, the synthesis is simplified to a single amination step rather than multiple oxidation and amination steps, thereby improving productivity and reducing process complexity
Solution Approach 2:
The invention performs preliminary action by pre-synthesizing the iodide-terminated fluoroether compound with the desired fluorinated polyoxaalkyl chain structure before the final amination step. This preliminary preparation of the carbon chain and functional groups eliminates the need for in-process oxidations and complex reagent additions during the main synthesis, making the process suitable for industrial scale production
2Productivity
If perfluoroalkyl halides are used as starting materials for amination, then high yield can be achieved, but the availability is limited, structures are restricted by boiling points, and removal of high boiling point solvents is difficult
Solution Approach 1:
The invention uses iodide-terminated fluoroether as a universal starting material that can serve multiple purposes: it provides the fluorinated polyoxaalkyl chain, contains a reactive iodide group for amination, and has appropriate solubility properties. This universal starting material overcomes the limitations of perfluoroalkyl halides which are restricted by boiling points and availability, allowing broader applicability and easier industrial scale production
Solution Approach 2:
The invention changes the physical parameters of the starting material from high boiling point perfluoroalkyl halides to iodide-terminated fluoroethers with more favorable boiling points and solubility characteristics. This parameter change allows for easier handling, removal of solvents, and broader structural versatility while maintaining high synthesis yields
3Productivity
If perfluoroalkyl compounds are used in synthesis, then the target fluoroamine can be produced, but environmental concerns arise due to formation of perfluorooctanoic acid
Solution Approach 1:
The invention extracts or removes the problematic perfluorinated carbon chain structure from the synthesis pathway by using iodide-terminated fluoroether as the starting material. This approach produces fluoro polyoxaalkylamines without generating perfluorooctanoic acid, thereby eliminating the environmental pollution issue while still achieving high productivity in producing the desired fluoroamine compounds
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 fluoroether compound exhibits high reactivity and flexibility, enabling broad industrial applications and environmentally friendly production, suitable for forming complexes with various metals.
Implementation Method 1
reaction of a iodide-terminated fluoroether compound with an alkylamine compound
Data Source
AI summary
An alkylamino group-terminated fluoroether compound, represented by the following general formula : RfO[CF(CF3)CF2O]mCF(CF3)(CH2)nNR1R2 (where Rf is a perfluoro lower-alkyl group, R1 is an alkyl group having 1-12 carbon atoms, R2 is a hydrogen atom, or an alkyl group having 1-12 carbon atoms, m is an integer of 0-10, and n is an integer of 3-8) is a novel compound, and is produced by reaction of an iodide-terminated fluoroether compound, represented by the following general formula : RfO[CF(CF3)CF2O]mCF(CF3)(CH2)nI with an alkylamine compound, represented by the following general formula : NHR1R2