Chosse the correct IUPAC name of the compound:
`CH_2=underset(CH_3)underset|C-CH_2-C-=CH`

Options

A. 4 - Methyl – 2 – penten - 1 – yne
B. 4 – Methyl – 4 – penten – 1 – yne
C. 2 – Methyl – 2 – penten – 4 – yne
D. 2 – Methyl – 1 – penten – 4 – yne

Answer

D

Explanation

`H_2overset1C=underset(CH_3)underset|overset2C-overset3CH_2-overset4C-=overset5CH`
The double bond is given priority over the triple bond for numbering the chain. Hence, the name will be 2-methyl pent-1-en-4-yne.