Cot Inhibitor Synthesis Without Hazardous Azide Intermediates
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Solution Overview
Problem
There is a need for effective methods to prepare Cot inhibitor compounds that avoid the use of hazardous azides, which are often used in the synthesis of triazole-containing compounds like Compound 1, due to their potential explosiveness.
Innovation Solution
A series of synthetic processes are developed using organometallic reagents, Lewis bases, titanium- or zirconium-based reagents, reducing agents, palladium or copper catalysts, and various solvents to synthesize Cot inhibitor compounds, bypassing the use of azides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If azides are used in the synthesis of triazole-containing compounds, then the synthesis can be achieved through standard methods, but the process becomes hazardous due to the potential explosiveness of azides
Solution Approach 1:
The patent removes the hazardous azide intermediate from the synthesis pathway entirely. Instead of using azides to form triazoles, the invention employs alternative reagents and reaction conditions that directly produce the desired triazole-containing compounds without generating explosive azide byproducts, thereby eliminating the safety hazard while maintaining synthetic efficiency
Solution Approach 2:
The patent transforms the potentially harmful azide-based chemistry into a safe alternative by using non-explosive reagents that achieve the same chemical transformation. The harmful explosive property of azides is replaced with benign reaction conditions that produce the same triazole product through a different mechanistic pathway, converting a hazardous process into a safe one
2Object-affected harmful factors
If alternative synthetic processes are developed to avoid azides, then safety hazards are reduced, but the process complexity increases due to the need for new reagents and conditions
Solution Approach 1:
The patent breaks down the complex alternative synthesis into discrete, manageable steps using readily available reagents. Each transformation is optimized independently, allowing the multi-step process to be executed with standard laboratory equipment and procedures, thereby reducing the perceived complexity despite avoiding azides
Solution Approach 2:
The patent employs reagents and reaction conditions that can be applied across multiple synthetic scenarios involving triazole formation. The developed methodology serves as a universal platform for synthesizing various triazole-containing compounds with different substituents, reducing the need for specialized procedures for each specific case
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
These processes enable the safe and efficient synthesis of Cot inhibitor compounds, reducing the risks associated with azides and providing a viable alternative for preparing these compounds.
Implementation Method 1
contacting Compound 2A with Compound 2B in the presence of an organometallic reagent and a Lewis base in a solvent at temperature sufficient to provide Compound 2C
Implementation Method 2
contacting Compound 2C with in the presence of a titanium- or zirconium-based reagent in a solvent at a temperature sufficient to provide Compound 2D
Implementation Method 3
contacting Compound 2D with a reducing agent and optionally, a ruthenium, palladium, rhodium, or platinum catalyst in a solvent at a temperature sufficient to provide Compound 2E
Implementation Method 4
contacting Compound 2F with Compound 2G in the presence of a palladium catalyst and a base in a solvent at a temperature sufficient to provide Compound 1
Data Source
AI summary
Disclosed are syntheses of a Cot (cancer Osaka thyroid) inhibitor, which has the following formula: