Question

Discuss isomers in double bond compounds taking example of butane. Draw their structures and write IUPAC names. 

Answer 1

Isomers in double bond compounds are possible with 4 or more than 4 carbon atoms. For example, butene has 4 carbon atoms, and it forms three isomers.

Sr. No.	Structure	IUPAC name
1.	CH3 - CH2 - CH = CH2	But-1-ene
2.	CH3CH = CH - CH3	But-2-ene
3.	CH2 = C(CH3) − CH3	2-methyl propene