The IUPAC name for the compound shown isSelect answer from the options belowbenzene bromide.bromobenzene.1-bromobenzene.1-bromo-1,3,5-cyclohexatriene.
Question
The IUPAC name for the compound shown is
Select answer from the options below:
- benzene bromide.
- bromobenzene.
- 1-bromobenzene.
- 1-bromo-1,3,5-cyclohexatriene.
Solution
The correct answer is bromobenzene.
Here's why:
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The compound is a derivative of benzene, which is a six-membered ring with alternating double bonds.
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There is a bromine atom attached to the benzene ring, making it a bromobenzene.
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In IUPAC nomenclature, the prefix '1-' is not necessary when there is only one substituent on the benzene ring, as the position of the substituent is implicit.
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The name '1-bromo-1,3,5-cyclohexatriene' is technically correct as it describes the structure of the molecule, but it is not the preferred IUPAC name. The IUPAC prefers the use of the parent name 'benzene' for this structure, rather than 'cyclohexatriene'.
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'Benzene bromide' is not correct because it suggests a bromide ion (Br-) attached to a benzene molecule, which is not the case here.
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