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Topic: Cycloalkanes stability  (Read 2433 times)

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Offline Pranav

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Cycloalkanes stability
« on: May 10, 2013, 01:27:42 AM »
I am not sure what rules to start with here. I think the 4th is the most stable as the substituents are trans to each other and there are least repulsion. How would I compare 3 and 2? ???
« Last Edit: May 10, 2013, 03:29:42 AM by Pranav »
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Offline iamback

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Re: Cycloalkanes stability
« Reply #1 on: May 10, 2013, 04:28:53 AM »
Answer should be A.

As far as the comparison is all about, see the hindrance.

In (3) methyl groups are diagonal carbons, In (2) it is on adjacent carbon hence populating it.
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Offline Pranav

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Re: Cycloalkanes stability
« Reply #2 on: May 10, 2013, 11:05:46 PM »
Quote from: iamback on May 10, 2013, 04:28:53 AM
Answer should be A.

A is not the answer.
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Offline camptzak

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Re: Cycloalkanes stability
« Reply #3 on: May 10, 2013, 11:37:15 PM »
its B

 ;D
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Offline iamback

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Re: Cycloalkanes stability
« Reply #4 on: May 11, 2013, 10:47:33 PM »
Yeah..! Sorry it's B. I didn't paid much attention on it. I forget to see cis-tans. Try imagining the (2) and (3) in 3D. Still the concept is hindrance.
« Last Edit: May 11, 2013, 11:31:50 PM by iamback »
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