2,3-Bisphosphinopyrazine Synthesis via One-Pot Deboranation
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Solution Overview
Problem
Existing methods for producing 2,3-bisphosphinopyrazine derivatives are not industrially advantageous due to the need for low temperatures, specialized cooling equipment, and complex multi-step processes, which result in low yield and purity.
Innovation Solution
A method involving the addition of a base to a solution containing 2,3-dihalogenopyrazine, a hydrogen-phosphine borane compound, and a deboranating agent at a temperature range of -25 to 100°C to produce 2,3-bisphosphinopyrazine derivatives with high optical purity and yield, simplifying the process and reducing equipment requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the aromatic nucleophilic substitution reaction is carried out at a low temperature of -70°C or lower to obtain high yield and purity, then the manufacturing precision is improved, but the device complexity increases due to the need for special cooling apparatus and the production time increases due to long cooling and heating periods
Solution Approach 1:
The invention changes the temperature parameter from -70°C or lower to -25 to 100°C, eliminating the need for special cooling apparatus while maintaining high optical purity and yield through the optimized one-pot reaction process
2Manufacturing precision
If the aromatic nucleophilic substitution reaction is carried out at a low temperature of -70°C or lower to obtain high yield and purity, then the manufacturing precision is improved, but the loss of time increases due to long cooling and heating periods
Solution Approach 1:
The invention changes the temperature parameter from -70°C or lower to -25 to 100°C, significantly reducing the time required for cooling and heating operations while maintaining high optical purity and yield through the optimized one-pot reaction process
3Ease of manufacture
If a multi-step production method is used to carry out the reaction at relatively industrially advantageous temperatures, then the ease of manufacture is improved, but the device complexity increases due to the need for multiple facilities and the process becomes complicated
Solution Approach 1:
The invention merges the deboranation reaction and aromatic nucleophilic substitution reaction into a single one-pot process, eliminating the need for multiple facilities and simplifying the overall production process while operating at industrially advantageous temperatures
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 allows for the production of 2,3-bisphosphinopyrazine derivatives with high optical purity and yield at industrially advantageous temperatures, simplifying the process and reducing equipment needs, making it more industrially viable for use as asymmetric catalysts and anticancer drugs.
Implementation Method 1
adding a base to a solution containing 2,3-dihalogenopyrazine, a hydrogen-phosphine borane compound and a deboranating agent
Implementation Method 2
allowing the resultant to react to thereby obtain the 2,3-bisphosphinopyrazine derivative
Implementation Method 3
a deboranating agent, and allowing the resultant to react
Data Source
AI summary
There is provided a method for producing a 2,3-bisphosphinopyrazine derivative, the method comprising a first step of adding a base to a liquid comprising: 2,3-dihalogenopyrazine represented by the following general formula (1); a hydrogen-phosphine borane compound represented by the following general formula (2); and a deboranating agent, and allowing the resultant to react to thereby obtain the 2,3-bisphosphinopyrazine derivative represented by the following general formula (3). According to the present invention, a method for producing the industrially advantageous 2,3-bisphosphinopyrazine derivative can be provided.