First slide

Isomerism

Question

Which one of the following molecule contains a chiral centre

Moderate

A

4-methyl-pent-2-yne
B

4-methyl-pent-1-yne
C

3-methyl-pent-1-yne
D

3,3-dimethyl-but-1-yne

Solution

Total number of alkynes (structural and stereo) = 8 ;
Number of structurally isomeric alkynes = 7 ;
Number of structurally isomeric terminal alkynes = 4 ;
Number of structurally isomeric non terminal (internal) alkynes = 3 ;
Number of structurally isomeric straight chain alkynes = 3 ;
Number of structurally isomeric branched chain alkynes = 4 ;
Number of stereo isomers (alkynes only) = 2 ;
Number of enantiomeric pairs (alkynes only) = 1 ;
Number of structurally isomeric straight chain hexynes = 3 ;
Number of structurally isomeric branched chain pentynes = 3 ;
Number of structurally isomeric branched chain butynes = 1 ;
*3-methyl-pent-1-yne has dextro and laevo forms

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App