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Cycloalkane Conformations
hard

In a molecule of 1-methylcyclohexane, which conformation minimizes steric hindrance and torsional strain while maximizing stability after a ring flip?

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Learning Path
Learning Path

Question & Answer
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Choose AnswerChoose the Best Answer

A

Chair conformation with the methyl group in the equatorial position

B

Boat conformation with the methyl group in the axial position

C

Chair conformation with the methyl group in the axial position

D

Twisted boat conformation with the methyl group in the equatorial position

Understanding the Answer

Let's break down why this is correct

When the methyl group is on the equatorial side, it stays farther away from the ring hydrogen atoms. Other options are incorrect because A boat shape always has more strain than the chair; Axial groups in the chair face 1,3‑interactions with hydrogens three atoms away.

Key Concepts

Chair and Boat Conformations
Torsional Strain
Ring Flipping
Topic

Cycloalkane Conformations

Difficulty

hard level question

Cognitive Level

understand

Deep Dive: Cycloalkane Conformations

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Definition
Definition

Cycloalkanes exhibit different conformations like the chair and boat structures due to the arrangement of atoms within the ring, affecting stability and strain. Understanding these variations is crucial in predicting reactivity and physical properties of cycloalkanes.

Topic Definition

Cycloalkanes exhibit different conformations like the chair and boat structures due to the arrangement of atoms within the ring, affecting stability and strain. Understanding these variations is crucial in predicting reactivity and physical properties of cycloalkanes.

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