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Simultaneous solvent screening and reaction optimization in microliter slugs.

Brandon J Reizman1, Klavs F Jensen

  • 1Department of Chemical Engineering, Novartis-MIT Center for Continuous Manufacturing, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA. kfjensen@mit.edu.

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Summary
This summary is machine-generated.

This study introduces an automated droplet system for optimizing chemical reactions in real-time. The findings show a link between solvent properties and reaction yield, paving the way for efficient chemical synthesis.

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Area of Science:

  • Chemical Engineering
  • Organic Synthesis
  • Process Optimization

Background:

  • Continuous flow chemistry offers advantages in reaction control and efficiency.
  • Automated screening systems are crucial for optimizing complex chemical processes.
  • Solvent selection significantly impacts reaction outcomes and scalability.

Purpose of the Study:

  • To develop and demonstrate an automated continuous flow droplet screening system.
  • To optimize the alkylation of 1,2-diaminocyclohexane using a design of experiments strategy.
  • To investigate the correlation between solvent properties and reaction yield.

Main Methods:

  • Utilized a continuous flow droplet system for real-time optimization.
  • Employed an optimal design of experiments strategy for parameter screening.
  • Performed the alkylation of 1,2-diaminocyclohexane in 16 μL droplets.
  • Demonstrated scalability of the developed method.

Main Results:

  • Achieved simultaneous optimization of solvent and continuous variables.
  • Identified a correlation between solvent hydrogen bond basicity and reaction yield.
  • Successfully scaled up the optimized reaction process.

Conclusions:

  • The automated droplet screening system enables efficient, real-time optimization of chemical reactions.
  • Solvent hydrogen bond basicity is a key factor influencing the yield of 1,2-diaminocyclohexane alkylation.
  • This approach facilitates rapid process development and scale-up in organic synthesis.