IUPAC name of the following is $\mathrm{CH}_2=$ $\mathrm{CH}-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{C} \equiv…

IUPAC name of the following is $\mathrm{CH}_2=$ $\mathrm{CH}-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{C} \equiv \mathrm{CH}$ :
  1. 1, 5-hexenyne
  2. 1-hexene 5-yne
  3. 1-hexyne-5-ene
  4. 1,5-hexynene

Solution

The IUPAC name of $\mathrm{CH}_2 \mathrm{CHCH}-$ ${ }_2 \mathrm{CH}_2 \mathrm{CCH}$ is 1-hexene-5-yne The double bond gets priority over triple bond in IUPAC nomenclature.

Asked in: NEET 2002

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