Concept explainers
(a)
Interpretation:
The configuration for the given moleculehas to be assigned.
Concept Introduction:
Priority rules:
- Priorities based on
atomic number
- When priority cannot be assigned on the basis of the atoms bonded directly to the chiral center
- Atoms participating in a double or triple bond are considered to be bonded to an equivalent number of phantom atoms.
For example,
- Priority assignment is made at the first point of difference between groups (should not be based on the larger group).
(b)
Interpretation:
The configuration for the given molecule has to be assigned.
Concept Introduction:
Priority rules:
- Priorities based on atomic number
- When priority cannot be assigned on the basis of the atoms bonded directly to the chiral center
- Atoms participating in a double or triple bond are considered to be bonded to an equivalent number of phantom atoms.
For example,
- Priority assignment is made at the first point of difference between groups (should not be based on the larger group).
(c)
Interpretation:
The configuration for the given molecule has to be assigned.
Concept Introduction:
Priority rules:
- Priorities based on atomic number
- When priority cannot be assigned on the basis of the atoms bonded directly to the chiral center
- Atoms participating in a double or triple bond are considered to be bonded to an equivalent number of phantom atoms.
For example,
- Priority assignment is made at the first point of difference between groups (should not be based on the larger group).
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Chapter 3 Solutions
Organic Chemistry
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- If the asymmetric carbons in a molecule have been designated (2R,3S,5R), what will the designations be in the molecule’s enantiomer? What will the designations be in one of its diastereomers?arrow_forwardIdentify all the chiral center/s.arrow_forwardDetermine the number and label the chiral centers in the moleculearrow_forward
- Count the number of chiral carbons in the given compounds and assign each chiral carbon as R or Sarrow_forwardDraw all the stereoisomers of the molecule shown below, grouping them in pairs of a usitros stuloads sia enantiomers. Assign the absolute configuration of the chiral carbons (R or S). Br Br Clarrow_forwardMolecules without a plane of symmetry are chiral. In the model you constructed in no.1, the tetrahedral carbon is the stereocenter; the molecule is chiral. A simple test for a stereocenter in a molecule is to look for a stereocenter with four different atoms or groups attached to it; this molecule will have no plane of symmetry. label the stereocenter in each structure with an asterisk (*).arrow_forward
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