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Related Concept Videos

Catalysis02:50

Catalysis

26.8K
The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
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Cycloaddition Reactions: Overview01:16

Cycloaddition Reactions: Overview

2.5K
Cycloadditions are one of the most valuable and effective synthesis routes to form cyclic compounds. These are concerted pericyclic reactions between two unsaturated compounds resulting in a cyclic product with two new σ bonds formed at the expense of π bonds. The [4 + 2] cycloaddition, known as the Diels–Alder reaction, is the most common. The other example is a [2 + 2] cycloaddition.
2.5K
Pericyclic Reactions: Introduction01:17

Pericyclic Reactions: Introduction

8.3K
Pericyclic reactions are organic reactions that occur via a concerted mechanism without generating any intermediates. The reactions proceed through the movement of electrons in a closed loop to form a cyclic transition state, where rearrangement of the σ and π bonds yields specific products.
Pericyclic reactions can be classified into three categories: electrocyclic reactions, cycloaddition reactions, and sigmatropic rearrangements. Electrocyclic reactions and sigmatropic...
8.3K
Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

2.3K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.3K
Olefin Metathesis Polymerization: Overview01:13

Olefin Metathesis Polymerization: Overview

2.1K
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.
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists...
2.1K
Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)00:53

Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)

1.9K
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.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
1.9K

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Related Experiment Video

Updated: Jun 17, 2025

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
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Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

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Repurposing a Catalytic Cycle for Transient Self-Assembly.

Shuntaro Amano1, Thomas M Hermans2

  • 1University of Strasbourg, CNRS, Strasbourg 67083, France.

Journal of the American Chemical Society
|August 11, 2024
PubMed
Summary
This summary is machine-generated.

Synthetic chemists can now create nonequilibrium systems by repurposing catalytic cycles. This approach simplifies the construction of chemical reaction cycles for dissipative self-assembly and autonomous machines.

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Area of Science:

  • Synthetic Chemistry
  • Chemical Engineering
  • Materials Science

Background:

  • Life relies on nonequilibrium systems for complex functions.
  • Synthetic chemists aim to replicate biological nonequilibrium systems.
  • Developing chemical reaction cycles is key for driving these systems.

Purpose of the Study:

  • To present a novel method for constructing chemical reaction cycles.
  • To enable dissipative self-assembly and autonomous molecular machines.
  • To overcome challenges in finding compatible reactions for cycles.

Main Methods:

  • Repurposing existing catalytic cycles as chemical reaction cycles.
  • Utilizing reactions known to occur concurrently under identical conditions.
  • Applying this approach to drive systems out of equilibrium.

Main Results:

  • Successfully repurposed catalytic cycles for driving dissipative self-assembly.
  • Demonstrated a method to overcome reaction compatibility issues.
  • Established a versatile approach applicable to diverse systems.

Conclusions:

  • Repurposing catalytic cycles offers a simplified route to chemical reaction cycles.
  • This strategy broadens the scope of out-of-equilibrium synthetic systems.
  • Facilitates advancements in autonomous molecular machines and self-assembly.