Junu Kim, Yusuke Hayashi, Sara Badr, Kazuya Okamoto, Toshikazu Hakogi, Haruo Furukawa, Satoshi Yoshikawa, Hayao Nakanishi and Hirokazu Sugiyama*,
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Kinetic Study and Model-Based Design Space Determination for a Drug Substance Flow Synthesis Using an Amination Reaction via Nucleophilic Aromatic Substitution
A kinetic study and model-based design space determination for drug substance flow synthesis using an amination reaction are presented. A flow experiment was conducted to synthesize 3-fluoro-4-morpholinobenzonitrile from 3,4-difluorobenzonitrile, morpholine, and diazabicycloundecene. Concentrations, residence time, temperature, and reactor inner diameter were varied to gather the kinetic data. A set of equations was defined to describe the mass and energy balances, and the developed model could reproduce the experimental profiles with high accuracy. By incorporating the Reynolds number into the pre-exponential factor, the developed one-dimensional model could account for performance variations in different inner diameter conditions. The model was then used to identify the design space, considering yield, temperature, productivity, and environment. The study also evaluated the process robustness given pulse disturbances, which could help identify the required sensor monitoring. Finally, a method for facilitating regulatory processes was proposed. The presented model-based approach can aid in producing high-quality pharmaceuticals in an efficient, sustainable, and cost-effective way by utilizing digital power.
期刊介绍:
The journal Organic Process Research & Development serves as a communication tool between industrial chemists and chemists working in universities and research institutes. As such, it reports original work from the broad field of industrial process chemistry but also presents academic results that are relevant, or potentially relevant, to industrial applications. Process chemistry is the science that enables the safe, environmentally benign and ultimately economical manufacturing of organic compounds that are required in larger amounts to help address the needs of society. Consequently, the Journal encompasses every aspect of organic chemistry, including all aspects of catalysis, synthetic methodology development and synthetic strategy exploration, but also includes aspects from analytical and solid-state chemistry and chemical engineering, such as work-up tools,process safety, or flow-chemistry. The goal of development and optimization of chemical reactions and processes is their transfer to a larger scale; original work describing such studies and the actual implementation on scale is highly relevant to the journal. However, studies on new developments from either industry, research institutes or academia that have not yet been demonstrated on scale, but where an industrial utility can be expected and where the study has addressed important prerequisites for a scale-up and has given confidence into the reliability and practicality of the chemistry, also serve the mission of OPR&D as a communication tool between the different contributors to the field.