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Mobile App Chapter 17: Problem 17.3 (page 646)
Give the IUPAC name for each compound.
(a)
(b)
(c)
(d)
Short Answer
Answer
- m-1,3-diisopropylbenzene
- 1-sec-butyl-4-ethylbenzene
- m-butylphenol
- 2-bromo-5-chlorotoulene
Step by step solution
Step-by-Step Solution Step 1: Rules for IUPAC nomenclature for compounds containing an aromatic ring
- For one substituent - the name of substituent followed by word benzene
- For two substituent - use prefix for position
1,2 - ortho
1,3 - meta
1,4 - para
Name the substituent in alphabetical order (excluding prefix)
- For more than two substituents - the number the substituent to get the lowest numbers possible
- If the ring is derivative of monosubstituted benzene, then replace benzene with the common name.
IUPAC name of the compound
(a) Two isopropyl groups at 1st and 3rd position - meta
Therefore, the IUPAC name of the compound is:
m-1,3-diisopropylbenzene
(b) Two groups at 1 and 4 position - para
Therefore, the IUPAC name of the compound is:
1-sec-butyl-4-ethylbenzene
(c) Monosubstituted derivative of benzene.
Benzene ring with -OH group - common name ‘phenol’.
One substituent at 3rd position with respect to OH – meta.
Therefore, the IUPAC name of the compound is:
m-butyl-phenol
(d) Monosubstituted derivative of benzene.
Benzene ring with group - common name ‘toluene’.
The molecule is named as benzene derivative therefore group is numbered 1.
Therefore, the IUPAC name of the compound is:
2-bromo-5-chlorotoulene
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