CONTINUOUS FLOW CHEMISTRY

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Continuous flow chemistry offers a variety of advantages over traditional batch processes, by providing rapid, efficient mixing, superior heat transfer, and safe operation at high temperatures and pressures. Due to these attractive characteristics, along with an inherent potential for high scalability within a smaller physical footprint, flow chemistry has generated significant interest within the pharmaceutical industry for improving synthesis efficiency. Our lab utilizes the benefits of flow chemistry for two broad applications: organic synthesis and nanoparticle assembly. In collaboration with several research groups at Purdue, we are developing a multi-scale synthesis platform capable of optimizing synthesis routes for a broad range of common active pharmaceutical ingredients (APIs). Our system incorporates microreactors in the size range of 0.5-19.5 μL that have been coupled with on-line and off-line mass spectrometry (MS) for reaction monitoring and route optimization. We have also used these microreactors to control self-assembly reactions for the rapid and stepwise formulation of multifunctional nucleic acid-loaded therapeutic nanoparticles with excellent control over their physical properties and biological performance.

 
 

SELECTED PUBLICATIONS

“Multistep Flow Synthesis of Diazepam Guided by Droplet Reaction Screening With Mechanistic Insights from Rapid MS Analysis”, Organic Process
Research & Development
 2017, DOI: 10.1021/acs.oprd.7b00218.

“Reaction Screening and Optimization of Continuous-Flow Atropine Synthesis by Preparative Electrospray Mass Spectrometry”, Analyst 2017, DOI:
10.1039/C7AN00622E.

“Mass Spectrometry Directed System for the Continuous-Flow Synthesis and Purification of Diphenhydramine”, Chemical Science2017 8, 4363-4370.

“Can Accelerated Reactions in Droplets Guide Chemistry at Scale?”, European Journal of Organic Chemistry 2016, 5480-5484.

“Influence of Molecular Structure on the In Vivo Performance of Flexible Rod Polyrotaxanes”, Biomacromolecules 2016 17, 2777-2786.

“Impact of Mixed b-Cyclodextrin Feeds on Pluronic Rotaxanation Efficiency and Product Solubility”, ACS Applied Materials & Interfaces 2015 7, 23831-23836.

“Effect of Pendant Group on pDNA Delivery by Cationic-b-Cyclodextrin:Alkyl-PVA-PEG Pendant Polymer Complexes”, Biomacromolecules 2014 15, 12-19.