1,4-bis(4-phenoxybenzoyl)benzene synthesis yield via elevated temperature
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Solution Overview
Problem
Current methods for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene face challenges in achieving high purity and yield, particularly at an industrial scale, with existing processes being economically unrealistic and inefficient in minimizing by-product impurities.
Innovation Solution
A method involving a reactant mixture of terephthaloyl chloride and diphenyl ether in a solvent, with a Lewis acid added at a temperature greater than 5°C, preferably above 15°C, to increase yield and reduce impurities, followed by purification through filtration and washing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the reaction is conducted at low temperature (0-5°C) as in prior art, then the reaction can be controlled, but the yield is low and by-product impurities increase
Solution Approach 1:
The patent changes the temperature parameter from conventional low temperature (0-5°C) to elevated temperature (20-50°C). This parameter change resolves the contradiction by simultaneously improving yield (productivity) while maintaining acceptable purity levels through the optimized temperature range that favors main product formation over by-product generation
2Manufacturing precision
If multiple purification steps (filtration, reslurrying) are used as in prior art, then purity can be improved, but production time and complexity increase
Solution Approach 1:
The patent extracts and eliminates unnecessary purification steps from the conventional multi-step process. By optimizing the reaction conditions (temperature and reagent ratios), the method achieves high purity in a single filtration step, removing the need for time-consuming reslurrying operations while maintaining product quality
Solution Approach 2:
The patent changes process parameters (temperature, reagent ratios) to achieve better reaction outcomes that require less intensive purification. The elevated temperature and optimized ratios produce fewer impurities, allowing simplification of the purification train and reducing overall production time
3Productivity
If conventional reagent ratios are used, then the process is simple, but yield and purity are not optimized for industrial scale
Solution Approach 1:
The patent optimizes reagent ratios and temperature parameters to achieve superior yield and purity. The specific ratio range (1:0.8 to 1:0.3) and temperature range (20-50°C) are optimized to maximize productivity while maintaining process simplicity through straightforward mixing and single-stage filtration
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 method achieves high purity and yield of 1,4-bis(4-phenoxybenzoyl)benzene, effectively minimizing by-product impurities and enabling industrial-scale production.
Implementation Method 1
1,4-bis(4-phenoxybenzoyl)benzene can be prepared by reacting terephthaloyl chloride and diphenyl ether in the presence of a Lewis acid such as aluminum trichloride
Implementation Method 2
The temperature of the reactant mixture is greater than 5°C during at least part of the step of adding the Lewis acid to the reactant mixture
Data Source
AI summary
The invention relates to a method for manufacturing 1,4-bis(4-phenoxybenzoylbenzene), comprising: - providing a reactant mixture comprising terephthaloyl chloride and diphenyl ether in a solvent; - adding a Lewis acid to the reactant mixture, so as to obtain a product mixture; wherein the temperature of the reactant mixture is greater than 5°C during at least part of the step of adding the Lewis acid to the reactant mixture.