Process chemistry | Wikipedia audio article
Channel: wikipedia tts
Date: 02/05/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Process_chemistry


00:01:37 1 Process chemistry considerations
00:02:45 1.1 Material cost
00:03:13 1.2 Conversion cost
00:03:47 1.2.1 Atom economy
00:05:18 1.2.2 Yield
00:08:41 1.2.3 Volume-time output
00:10:19 1.2.4 Environmental factor (e-factor) and process mass intensity (PMI)
00:12:36 1.2.5 Quality service level (QSL)
00:13:20 1.2.6 Process excellence index (PEI)
00:15:59 1.3 EcoScale
00:16:48 2 Synthetic case studies
00:16:58 2.1 Boehringer Ingelheim HCV protease inhibitor (BI 201302)
00:23:13 3 Additional topics
00:23:23 3.1 Transition-metal catalysis and organocatalysis
00:23:34 3.2 Biocatalysis and enzymatic engineering
00:26:02 3.3 Continuous/flow manufacturing
00:29:34 4 Academic research institutes in process chemistry



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SUMMARY
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Process chemistry is the arm of pharmaceutical chemistry concerned with the development and optimization of a synthetic scheme and pilot plant procedure to manufacture compounds for the drug development phase. Process chemistry is distinguished from medicinal chemistry, which is the arm of pharmaceutical chemistry tasked with designing and synthesizing molecules on small scale in the early drug discovery phase.
Medicinal chemists are largely concerned with synthesizing a large number of compounds as quickly as possible from easily tunable chemical building blocks (usually for SAR studies). In general, the repertoire of reactions utilized in discovery chemistry is somewhat narrow (for example, the Buchwald-Hartwig amination, Suzuki coupling and reductive amination are commonplace reactions).  In contrast, process chemists are tasked with identifying a chemical process that is safe, cost and labor efficient, “green,” and reproducible, among other considerations. Oftentimes, in searching for the shortest, most efficient synthetic route, process chemists must devise creative synthetic solutions that eliminate costly functional group manipulations and oxidation/reduction steps.
This article focuses exclusively on the chemical and manufacturing processes associated with the production of small molecule drugs. Biological medical products (more commonly called “biologics”) represent a growing proportion of approved therapies, but the manufacturing processes of these products are beyond the scope of this article. Additionally, the many complex factors associated with chemical plant engineering (for example, heat transfer and reactor design) and drug formulation will be treated cursorily.