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Cycloalkanes Naming
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In a cyclohexane derivative with two substituents, one methyl group at the 1-position and another at the 3-position, which configuration will be observed if the methyl at the 1-position is axial and the methyl at the 3-position is equatorial?

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Choose AnswerChoose the Best Answer

A

Cis configuration

B

Trans configuration

C

Both configurations are equivalent

D

No configuration due to steric hindrance

Understanding the Answer

Let's break down why this is correct

In cyclohexane, the axial position points straight up or down along the ring axis. Other options are incorrect because The cis option assumes both methyl groups share the same side of the ring; Saying the configurations are equivalent ignores the fixed orientation of each substituent.

Key Concepts

Cis-Trans Isomerism
Cycloalkane Derivatives
Topic

Cycloalkanes Naming

Difficulty

medium level question

Cognitive Level

understand

Deep Dive: Cycloalkanes Naming

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Definition
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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