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Ask iit jee aieee pet cbse icse state board experts Expert Question: tough question
Forum Index -> Organic Chemistry like the article? email it to a friend.  
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budku007 (396)

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tough question



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tarinbansal (3644)

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Its a question of ring expansion. In the second step of the mechanism shown in the figure, 4 membered ring being more unstable as compared to 5 membered through methyl shift.


Now the question may arise why we are expanding 4 membered ring, why not 5 membered to form a 6 C ring? That's becoz a 5+5 ring system is more stable than 4+6 as a 4 membered ring is very unstable as compared to 5 membered.


Hope U get it.



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shreyasnivas (256)

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good job tarin.. im surprised you got no thanks for your hard work.. take my salute.

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budku007 (396)

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Thanx mate really appreciate that


<TABLE CELLSPACING="1" CELLPADDING="1" BORDER="0">
<TR><TD>





Anyone who has never made a mistake has never tried anything new
You can never solve a problem on the level on which it was created.
When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity

Purpose of solving a problem is not simply to get the answer(the answer is only an evidence) but to develop your thinking ability
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budku007 (396)

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and the step of making pie bond waz according to Sytzeff rule right??


<TABLE CELLSPACING="1" CELLPADDING="1" BORDER="0">
<TR><TD>





Anyone who has never made a mistake has never tried anything new
You can never solve a problem on the level on which it was created.
When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity

Purpose of solving a problem is not simply to get the answer(the answer is only an evidence) but to develop your thinking ability
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tarinbansal (3644)

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Yes budku,
that was acccording to Saytzeff rule i.e, more hyperconjugated alkene is more stable.

The quality of a person's life is in direct proportion to their commitment to excellence, regardless of their chosen field of endeavor.

It is during our darkest moments that we must focus to see the light.

Check out my blog at:
http://tarinbansal.blogspot.com/
(A must see for every student)

Back to goiit, this time with Baby Veerappan. :D
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madhusudan.chavan (777)

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I agree with the tarinbansal's answer, his logical reasoning appears to be correct.

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