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Chapitre 4

Stéréoisomérie

Chiralité
Chiralité
Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. ...
Isomérie
Isomérie
Isomers are molecules with the same molecular formula but different structural arrangements. Isomers can be further classified into constitutional isomers ...
Stéréoisomères
Stéréoisomères
On the basis of mirror symmetry, stereoisomers of an organic molecule can be further classified into diastereomers and enantiomers. Diastereomers are ...
Nomenclature des énantiomères
Nomenclature des énantiomères
The naming of enantiomers employs the Cahn–Ingold–Prelog rules that involve assigning priorities to different substituent groups at a chiral ...
Propriétés des énantiomères et activité optique
Propriétés des énantiomères et activité optique
It is essential to understand the difference between chiral and achiral interactions and the implications thereof in optical activity and their ...
Molécules avec plusieurs centres chiraux
Molécules avec plusieurs centres chiraux
Molecules that possess multiple chiral centers can afford a large number of stereoisomers. For instance, while some molecules like 2-butanol have one ...
Projections de Fischer
Projections de Fischer
Learning to draw Fischer projections of molecules and understanding their relevance plays a crucial role in the visual depiction of organic molecules. A ...
Mélanges racémiques et la résolution des énantiomères
Mélanges racémiques et la résolution des énantiomères
A racemic mixture, or racemate, is an equimolar mixture of enantiomers of a molecule that can be separated using their unique interaction with chiral ...
Stéréoisomérie des composés cycliques
Stéréoisomérie des composés cycliques
In this lesson, we delve into the role of ring conformation and its stability, which determines the spatial arrangement and, consequently, the molecular ...
Chiralité de l'azote, du phosphore et du soufre
Chiralité de l'azote, du phosphore et du soufre
Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, ...
Prochiralité
Prochiralité
The concept of prochirality leads to the nomenclature of the individual faces of a molecule and plays a crucial role in the enantioselective reaction. It ...
La chiralité dans la nature
La chiralité dans la nature
Chirality is the most intriguing yet essential facet of nature, governing life’s biochemical processes and precision. It can be observed from a ...
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