Learning Path
Question & Answer
Choose the Best Answer
1-bromo-3-methylcyclohexane
3-bromo-1-methylcyclohexane
1-methyl-3-bromocyclohexane
3-methyl-1-bromocyclohexane
Understanding the Answer
Let's break down why this is correct
The name starts with the lowest number for the bromine, because bromine gets priority over methyl when choosing locants. Other options are incorrect because This choice numbers the ring so the methyl group gets 1, which breaks the rule of giving the lowest possible number to the bromine; The name keeps the same numbers but lists methyl before bromine.
Key Concepts
Cycloalkanes Naming
medium level question
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Deep Dive: Cycloalkanes Naming
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Definition
Naming cycloalkanes involves adding the prefix 'cyclo-' before the root name, numbering carbons to give substituents the lowest possible numbers, and alphabetically ordering substituents. The naming also includes using prefixes like cis- and trans- based on the orientation of substituents on the ring, with cyclopentanes and cyclohexanes being the most common due to their stability and low ring strain.
Topic Definition
Naming cycloalkanes involves adding the prefix 'cyclo-' before the root name, numbering carbons to give substituents the lowest possible numbers, and alphabetically ordering substituents. The naming also includes using prefixes like cis- and trans- based on the orientation of substituents on the ring, with cyclopentanes and cyclohexanes being the most common due to their stability and low ring strain.
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