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Biological macromolecules are organic compounds, predominantly composed of carbon atoms. The carbon atoms are covalently bonded with hydrogen, oxygen, nitrogen, and other minor elements. There are four major biological macromolecule classes: carbohydrates, lipids, proteins, and nucleic acids.
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Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
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α-Substituted ketones or aldehydes can be synthesized from enamines by the Stork enamine reaction, named after its pioneer Gilbert Stork. Enamines are useful synthetic intermediates where the lone pair on nitrogen is in conjugation with the C=C bond. They resemble enolate ions, as the resonance forms of both species have a nucleophilic α carbon.
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The radical chain-growth polymerization mechanism consists of three steps: initiation, propagation, and termination of polymerization. The polymerization initiates when a free radical generated from the radical initiator adds to the unsaturated bond in the monomer. The unpaired electron of the free radical and one π electron in the unsaturated bond creates a σ bond between the free radical and the monomer. As a result, the other π electron in the unsaturated bond converts this species into...
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Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
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The kinetic studies of SN2 reactions suggest an essential feature of its mechanism: it is a single-step process without intermediates. Here, both the nucleophile and the substrate participate in the rate-determining step.
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Hierarchical and Programmable One-Pot Oligosaccharide Synthesis
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Machine-Assisted Organic Synthesis.

Steven V Ley1, Daniel E Fitzpatrick2, Rebecca M Myers2

  • 1Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK). svl1000@cam.ac.uk.

Angewandte Chemie (International Ed. in English)
|July 21, 2015
PubMed
Summary
This summary is machine-generated.

The integration of automated machines is transforming organic synthesis, requiring adaptable chemical reactors for diverse research conditions. This review explores the practical challenges and opportunities presented by these new enabling technologies in chemical synthesis.

Keywords:
machine-assisted synthesissustainable chemistrysynthetic methods

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Area of Science:

  • Organic synthesis
  • Chemical engineering
  • Automation

Background:

  • The field of organic synthesis is increasingly influenced by the adoption of automated machinery.
  • Research laboratories face a dynamic environment requiring versatile equipment capable of handling various reaction conditions and materials.

Purpose of the Study:

  • To review the impact of machine advent on organic synthesis programs.
  • To emphasize practical issues in chemical reactor design for modern synthesis.

Main Methods:

  • Discussion of modular reactor design principles.
  • Overview of specialized reaction techniques like electrochemistry and photochemistry.
  • Analysis of equipment requirements for diverse reaction parameters (temperature, pressure) and phases (gases, slurries).

Main Results:

  • Automated machines necessitate modular chemical reactors adaptable to a wide range of conditions.
  • Specialized technologies such as electrochemical and photochemical methods are emerging.
  • The adoption of these technologies presents both opportunities and challenges.

Conclusions:

  • Adaptable and modular chemical reactor design is crucial for integrating advanced machinery in organic synthesis.
  • New technologies offer expanded capabilities but require careful implementation.
  • Successful adoption of enabling technologies will shape the future of chemical research and development.