Olefin Metathesis Catalyst Loading Reduction via Benzoquinone Additives
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for olefin metathesis reactions face challenges in achieving high yield with minimal isomerization and reduced catalyst load, leading to increased costs and inefficiencies.
Innovation Solution
The method involves using a metathesis catalyst in a coupling reaction of olefins with an additive under vacuum conditions, with a catalyst load of less than 100 ppm by weight, and optional heating, which includes bubbling an inert gas through the mixture to enhance conversion and selectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional metathesis catalyst loading is used, then the reaction can proceed, but the cost increases and efficiency decreases
Solution Approach 1:
The patent changes the chemical parameters of the reaction system by introducing specific additives (benzoquinone compounds) that modify the catalytic cycle efficiency. This allows the reaction to achieve high conversion rates with significantly reduced catalyst loading (less than 100 ppm), resolving the contradiction between productivity and quantity of substance.
Solution Approach 2:
The benzoquinone additive acts as an intermediary species that facilitates the metathesis reaction. It interacts with the ruthenium catalyst to form more active species or stabilize key intermediates, enabling the reaction to proceed efficiently at lower catalyst concentrations and thus reducing cost while maintaining productivity.
2Productivity
If metathesis reaction is performed, then olefin coupling occurs, but isomerization of the olefin also occurs reducing yield
Solution Approach 1:
The patent converts the potentially harmful isomerization side reaction into a beneficial outcome by using benzoquinone additives that selectively suppress isomerization pathways while promoting the desired coupling reaction. The additive acts as a selective inhibitor of unwanted side reactions, improving product selectivity without sacrificing coupling reaction rate.
Solution Approach 2:
The introduction of benzoquinone compounds changes the chemical environment and reaction parameters, creating conditions that favor the coupling reaction over isomerization. This parameter change allows the system to achieve high selectivity for the desired product while maintaining high conversion rates.
3Productivity
If higher catalyst loading is used to increase conversion, then productivity improves, but cost increases significantly
Solution Approach 1:
The patent modifies the reaction parameters by adding benzoquinone additives that enhance catalyst efficiency. This allows the system to achieve high conversion rates at lower catalyst loadings (less than 100 ppm), significantly reducing the economic cost of the process while maintaining or improving productivity.
Solution Approach 2:
The benzoquinone additive serves as a cost-effective intermediary that amplifies the catalytic activity. By introducing this relatively inexpensive additive, the system achieves high productivity with minimal catalyst consumption, thereby reducing the overall process cost while maintaining high conversion rates.
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 approach significantly reduces isomerization and increases the conversion rate of the desired product, achieving high yields with lower catalyst usage, making the process more cost-effective and efficient.
Implementation Method 1
The present disclosure provides for a method of producing an organic compound. The method uses a metathesis catalyst in a coupling reaction of an olefin
Implementation Method 2
placing the container under vacuum
Implementation Method 3
optionally heating the second mixture to a temperature, the temperature being greater than room temperature
Implementation Method 4
bubbling a gas through the olefin
Data Source
AI summary
Disclosed is a method of producing an organic compound. The method uses a metathesis catalyst in a coupling reaction of an olefin. The method comprises the steps of introducing the olefin into a container; either placing the container under vacuum or bubbling a gas through the olefin; adding an additive with the olefin; mixing the olefin and the additive, the mixing creating a mixture; adding an amount of the metathesis catalyst to the mixture, the amount being less than about 100 ppm by weight of the mixture; and optionally heating the mixture to a temperature, the temperature being greater than room temperature.