Apalutamide Synthesis via Solvent Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for preparing apalutamide are inefficient and result in the formation of impurities, such as diketo-impurity-A and desflouro-impurity-B, which affect the purity of the final product.
Innovation Solution
A process involving the reaction of compound Formula (II′) or its salts with compound Formula (III), optionally in the presence of an alcohol or phenol, to obtain apalutamide, which arrests the formation of impurities and results in a product substantially free from these impurities, using a solvent system that includes esters, hydrocarbons, and chlorinated solvents, and employing a temperature range from 25°C to the boiling point of the solvent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If current methods for preparing apalutamide are used, then the synthesis process can be completed, but impurities such as diketo-impurity-A and desflouro-impurity-B are formed, reducing product purity
Solution Approach 1:
The patent applies parameter changes by optimizing reaction conditions including temperature control (25°C to boiling point of solvent), solvent selection (esters, hydrocarbons, or chlorinated solvents), and reaction time to prevent impurity formation. These parameter modifications transform the synthesis process to achieve greater than 98% purity by controlling the chemical environment during apalutamide preparation.
2Productivity
If conventional synthesis processes are employed, then apalutamide can be produced, but the process efficiency is low and requires extensive purification steps
Solution Approach 1:
The patent implements preliminary action by designing a synthesis process that prevents impurity formation from the outset through optimized reaction parameters and solvent selection. This proactive approach eliminates the need for extensive downstream purification steps, thereby increasing productivity and reducing time loss without compromising product quality.
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 process achieves apalutamide with high purity, greater than 98%, significantly reducing the presence of diketo-impurity-A and desflouro-impurity-B, as measured by HPLC, and allows for the isolation of substantially pure apalutamide free from one or more impurities.
Implementation Method 1
heating to a temperature of about 80° C.
Implementation Method 2
The present invention relates to a process for the preparation of apalutamide
Data Source
AI summary
The present invention relates to a process for the preparation of apalutamide. In particular, the present invention relates to a process for the preparation of apalutamide and its intermediates. The present invention also relates to pharmaceutical compositions comprising apalutamide.