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ring expansion & contraction occurs in which type of reaction?please describe elaborately.

ring expansion & contraction occurs in which type of reaction?please describe elaborately.

Grade:12

3 Answers

iit jee
44 Points
9 years ago

hi,

suppose the intermadiate formed is a carbocation ,if it is possible to make it a more stable carbocation then ring expansion is favoured.

and same with the caranion but there contraction......

 

kedar joshi..

Utkarsh
16 Points
2 years ago
Organic compounds ..... contacts or expands ring....to get more stable structure....
Expansion or contraction is done by methyl shift or hydride shift
 
It helps the compound to get stable structure.....
Utkarsh
16 Points
2 years ago
Continued from previous answer......(expansion  or contraction helps to overcome angle strain......)
 
4,5 member ring goes to 6(expansion)
 
7,8 member ring goes to 6 (contraction)

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