The correct IUPAC name of the following structure is :

cyclodec-4-en-1-yne

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cyclodec-1-en-4-yne

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cyclodec-2-en-5-yne

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cyclodec-1-en-3-yne

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Solution

The correct option is B cyclodec-1-en-4-yne
Primary Suffix in Cyclic System:
If both double and triple bonds are present then, alphabetical order is followed in writing the name.
While numbering, double bond is given preference over triple bond.

So, the correct IUPAC name is cyclonon-1-en-4-yne

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{C H}_{3} - C H = C H - C \equiv C - H

What is the correct IUPAC name of the compound?

$C H_{2} = C H - C H_{2} - C \equiv C H$ ?

H C \equiv C H - C H = C H_{2}

Write IUPAC names of the products obtained by the ozonolysis of the following compounds:
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(ii) 3,4-Dimethyl-hept-3-ene

(iii) 2-Ethylbut-1-ene

(iv) 1-Phenylbut-1-ene

C H_{3} - C H_{3} | C H - C H = C H_{2}

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