Modeling-based Approach Towards Quality by Design for a Telescoped Process

Area of Science:

• Chemical Engineering
• Process Chemistry
• Pharmaceutical Manufacturing

Background:

• Telescoped synthesis offers efficiency but requires precise control.
• Quality by Design (QbD) principles provide a systematic approach to process development.
• Understanding reaction kinetics is crucial for optimizing complex synthetic routes.

Purpose of the Study:

• To apply Quality by Design (QbD) principles to a telescoped, two-step synthesis.
• To develop a kinetic model for predicting process outcomes and identifying design spaces.
• To optimize process parameters for improved yield, quality, and robustness while reducing reagent consumption.

Main Methods:

• Development of a kinetic model encompassing 12 individual reactions.
• Utilizing the kinetic model to predict the effects of process parameters on yield and quality.
• Creation of contour plots to visualize process responses and define design spaces.
• Exploration of new process parameter ranges within identified design spaces.

Main Results:

• A robust kinetic model was established to accurately describe the synthesis and side reactions.
• The model successfully predicted the impact of process parameters on yield and quality.
• New process conditions were identified within the design space, enhancing process robustness.
• A significant reduction in the consumption of a key reagent was achieved.

Conclusions:

• The application of QbD principles and kinetic modeling enabled significant process optimization.
• The developed kinetic model and identified design spaces offer a platform for further improvements.
• The established strategies are transferable to other synthetic processes, advancing research and development efforts.