Pyrazole-Amide Synthesis via Segmented Palladium Coupling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for producing pyrazole-amide compounds are inefficient for treating glucose metabolism disorders and related diseases, as they lack a high-yield and convenient synthesis process for effective PDHK inhibitors.
Innovation Solution
A novel production method involving a coupling reaction with a palladium catalyst, base, and carboxylic acid, followed by hydrolysis and amidation steps, to produce a pyrazole-amide compound or its salt or hydrate, which serves as a PDHK inhibitor for treating glucose metabolism disorders and other diseases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional methods are used for producing pyrazole-amide compounds, then the synthesis process is simpler, but the production yield is low and the process is inefficient
Solution Approach 1:
The synthesis process is divided into distinct modular steps: Step 1 (coupling reaction to form intermediate compound of formula IV), Step 2 (hydrolysis to form compound of formula V), and Step 3 (amidation to produce final pyrazole-amide compound of formula I). Each step uses specific reagents and conditions optimized for that transformation, allowing the complex overall process to be managed through manageable segments while achieving high yield.
Solution Approach 2:
The invention introduces intermediate compounds (formula IV and formula V) as mandatory stages in the synthesis pathway. These intermediates serve as chemical mediators that facilitate the transformation from starting materials to final product, enabling high-yield production through controlled stepwise reactions rather than attempting direct synthesis.
2Productivity
If a multi-step synthesis process is used, then the production yield increases, but the manufacturing time and operational complexity increase
Solution Approach 1:
The synthesis method employs continuous useful action by designing a reaction sequence where each step flows into the next without interruption. The coupling reaction produces intermediate IV, which is immediately hydrolyzed to V, then amidated to final product I. This continuous transformation minimizes idle time and maintains productive chemical action throughout the process, reducing total manufacturing time despite multiple steps.
Solution Approach 2:
Each synthesis step utilizes specific parameter optimizations: Step 1 uses palladium catalyst with base and carboxylic acid at controlled temperature; Step 2 uses hydrolysis conditions; Step 3 uses amidation conditions. By changing parameters (catalysts, reagents, temperature, pH) between steps, the process achieves high yield at each stage, making the overall multi-step process more time-efficient than conventional methods.
3Reliability
If conventional synthesis methods are used, then the operational simplicity is maintained, but the yield and efficiency for treating glucose metabolism disorders are insufficient
Solution Approach 1:
The method performs preliminary action by first creating the intermediate compound of formula IV through coupling reaction, then preparing compound of formula V through hydrolysis before final amidation. These preliminary steps ensure that the active pyrazole-amide compound is produced with high purity and yield, guaranteeing reliability for treating glucose metabolism disorders while establishing a systematic manufacturing approach.
Solution Approach 2:
The intermediate compounds (formula IV and V) act as chemical mediators that ensure reliable production of the therapeutic agent. These intermediates allow for controlled transformation and purification at each stage, ensuring that the final product meets the high standards required for effective treatment of glucose metabolism disorders, while the stepwise process maintains manufacturability.
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 enables the high-yield production of pyrazole-amide compounds with PDHK inhibitory action, effectively treating glucose metabolism disorders, mitochondrial diseases, and other conditions, providing a convenient and efficient synthesis process.
Implementation Method 1
a coupling reaction with a compound represented by the formula (III) in the presence of a metal catalyst, a base and carboxylic acid
Implementation Method 2
a coupling reaction with a compound represented by the formula (III) in the presence of a metal catalyst, a base and carboxylic acid
Implementation Method 3
a step of hydrolyzing the compound of the aforementioned formula (IV) to convert same to a compound represented by the formula (V)
Implementation Method 4
reacting the compound of the aforementioned formula (V) or a salt thereof with ammonia in the presence of a condensing agent to convert same to a compound represented by the aforementioned formula (I)
Data Source
AI summary
A production method of a compound represented by the formula [I]: or a pharmaceutically acceptable salt thereof, or a hydrate thereof.