Question

Draw the structure of isomers of butene and write their 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