CI

Pushing Electrons

4th Edition

ISBN:9781133951889

Author:Weeks, Daniel P.

Publisher:Weeks, Daniel P.

Chapter3: Mechanisms

Section: Chapter Questions

Problem 88EQ

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Concept explainers

Stereochemistry and Isomerism

Stereochemistry deals with the three-dimensional structure and properties of molecules. It explains the arrangement of atoms and their manipulation within a molecule in a 3D structure. Stereochemistry can be dealt with all types of molecules. Based on the stereochemistry of a molecule, the physical and chemical properties of the molecules vary.

Question

Does the following compound have the R or the S configuration?

Transcribed Image Text:CI

Expert Solution

Step 1

Rules for R and S configuration:

Atoms bonded with chiral carbon atom are arranged according to atomic mass. Higher atomic mass should be given first priority followed by others.
Atoms are labelled as 1, 2, 3, and 4. Atom with higher atomic mass is given as 1 followed by 2,3, and 4 according to atomic mass.
If the order of atomic mass is in clockwise direction then the chiral carbon is labelled as R.
If the order of atomic mass is in anti-clockwise direction then the chiral carbon is labelled as S.
When the fourth prioritized atom is bonded by wedge line then order of clockwise direction should be labelled as S and order of anti-clockwise direction should be labelled as R.

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