Related Experiment Video
Updated: Oct 17, 2025
07:50
Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks
Published on: November 25, 2015
14.6K
Design of Subreplicating Systems from an Existing Self-Replicating Diels-Alder Reaction System by Isosteric
1Lehrstuhl für Organische Chemie I, Ruhr-Universität Bochum, Universitätsstrasse 150, Bochum 44801, Germany.
The Journal of Organic Chemistry
|October 11, 2021
Summary
Researchers modified a non-enzymatic self-replicating Diels-Alder reaction by altering its components. This resulted in improved diastereoselectivity, enhancing the efficiency of self-replicating chemical systems.
Area of Science:
- Chemistry
- Chemical Synthesis
- Systems Chemistry
Background:
- Non-enzymatic self-replicating systems rely on catalytically active ternary complexes.
- Product templates within these complexes facilitate precursor proximity for new bond formation.
Purpose of the Study:
- To evaluate and modify a previously reported self-replicating Diels-Alder reaction.
- To investigate the impact of isosteric replacements on self-replication and diastereoselectivity.
- To enhance the selectivity of competing self-replicating species.
Main Methods:
- Isosteric replacement of the maleimide component's spacer group.
- Analysis of diastereoselectivity in the modified system.
- Seeding experiments to confirm autocatalytic activity.
- Kinetic data analysis using SimFit simulations.
Main Results:
- Self-replication was conserved after isosteric replacement.
- New diastereoselectivity levels of 77% and 21% were observed.
- A subsequent modification achieved 94% diastereoselectivity for the favored replicator.
- Both replicators demonstrated autocatalytic activity, competing for reagents.
Conclusions:
- Isosteric replacement is a viable strategy for tuning self-replicating systems.
- Selective blocking of competing autocatalytic cycles can significantly enhance product selectivity.
- The study advances the understanding and design of artificial self-replicating chemical systems.
More Related Videos
Related Concept Videos
01:28Diels–Alder Reaction Forming Cyclic Products: Stereochemistry
4.2K
The Diels–Alder reaction is one of the robust methods for synthesizing unsaturated six-membered rings. The reaction involves a concerted cyclic movement of six π electrons: four π electrons from the diene and two π electrons from the dienophile.
4.2K
![[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2Ffiles%2Fmedia%2Fscience-education%2Fscience-education-thumbs%2F12417.jpg&w=3840&q=75)
01:16[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction
11.0K
The Diels–Alder reaction is an example of a thermal pericyclic reaction between a conjugated diene and an alkene or alkyne, commonly referred to as a dienophile. The reaction involves a concerted movement of six π electrons, four from the diene and two from the dienophile, forming an unsaturated six-membered ring. As a result, these reactions are classified as [4+2] cycloadditions.
11.0K
01:29Diels–Alder Reaction: Characteristics of Dienes
4.6K
The Diels–Alder reaction brings together a diene and a dienophile to form a six-membered ring. Both components have unique characteristics that influence the rate of the reaction.
Characteristics of the diene
Conformation
The simplest example of a diene is 1,3-butadiene, an acyclic conjugated π system. At room temperature, the molecule exists as a mixture of s-cis and s-trans conformers by virtue of rotation around the carbon–carbon single bond. Although the s-trans isomer is...
Characteristics of the diene
Conformation
The simplest example of a diene is 1,3-butadiene, an acyclic conjugated π system. At room temperature, the molecule exists as a mixture of s-cis and s-trans conformers by virtue of rotation around the carbon–carbon single bond. Although the s-trans isomer is...
4.6K
01:31Diels–Alder vs Retro-Diels–Alder Reaction: Thermodynamic Factors
5.3K
The Diels–Alder reaction is thermally reversible, meaning that the reaction reverts to the starting diene and dienophile under suitable temperatures. The forward reaction gives a cyclohexene derivative and is favored at low to medium temperatures. The reverse process, also called retro-Diels–Alder reaction, is a ring-opening process favored at high temperatures.
5.3K
01:24Diels–Alder Reaction: Characteristics of Dienophiles
6.6K
In a Diels–Alder reaction, the diene is usually an electron-rich system and acts as a nucleophile, whereas the dienophile is electron-deficient and functions as an electrophile. Much like the diene, the nature of the dienophile significantly impacts the outcome of the reaction.
Characteristics of Dienophiles
Generally, the best dienophiles are alkenes containing electron-withdrawing substituents such as carbonyl, nitrile, and nitro groups. The feasibility of a Diels–Alder reaction depends...
Characteristics of Dienophiles
Generally, the best dienophiles are alkenes containing electron-withdrawing substituents such as carbonyl, nitrile, and nitro groups. The feasibility of a Diels–Alder reaction depends...
6.6K
01:29Diels–Alder Reaction Forming Bridged Bicyclic Products: Stereochemistry
4.9K
Diels–Alder reactions between cyclic dienes locked in an s-cis configuration and dienophiles yield bridged bicyclic products.
4.9K