
Concept explainers
Assign priorities to the groups in each set.
- (a) —H —CH3 —OH —CH2OH
- (b) —CH2CH=CH2 —CH=CH2 —CH3 —CH2COOH
- (c) —CH3 —H —COO–—NH3+
- (d) —CH3 —CH2SH —NH3+ —CHO
(a)

Interpretation:
Priorities to the given groups 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).
Explanation of Solution
Given groups,
Assign priorities to the given groups based on the priority rules,
(b)

Interpretation:
Priorities to the given groups 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).
Explanation of Solution
Given groups,
Assign priorities to the given groups based on the priority rules,
(c)

Interpretation:
Priorities to the given groups 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).
Explanation of Solution
Given groups,
Assign priorities to the given groups based on the priority rules,
(d)

Interpretation:
Priorities to the given groups 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).
Explanation of Solution
Given groups,
Assign priorities to the given groups based on the priority rules,
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Chapter 3 Solutions
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