Consider the following structural formula of alkyl halide: The correct name according to IUPAC is:
Correct answer: A. 1-Bromo-4-methylpentane
- A. 1-Bromo-4-methylpentane
- B. 2-Methyl-3-bromopentane
- C. 2-Methyl-1-bromopentane
- D. 2-Methyl-2-bromopentane
Explanation
The longest chain has 5 carbon atoms so, is a pentane (there are no double bonds). It has a bromine atom attached to the first carbon atom so, 1-bromo and a methyl group attached to the 4th carbon so, 4-methyl. Hence, the name is 1-bromo, 4-methyl pentane. Therefore, option a is correct.
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About Alkyl Halides
Alkyl halides are named and related to their carbon-halogen structure, polarity and reactivity. The key reactions are nucleophilic substitution by SN1 and SN2 mechanisms and elimination by E1 and E2 mechanisms, including how substrate structure, nucleophile, base, solvent and temperature influence substitution versus elimination.
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