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Question

Write the IUPAC name of the following:​
(e) CH3CCCH2CH3

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Solution

PAC name is Pent-2-yne.​
Step 1: Find the longest continuous carbon chain. Here the longest chain has 5 carbons (Root word: Pent)​
Step 2: Identify and name the groups that are attached to this chain. Here one triple bond is present on the chain.
​ Step 3: Numbered the chain consecutively, starting at the end nearest a substituent group.
​ Step 4: Designated the location of each substituent group by an appropriate number and name. Here one triple bond is present on the chain at 2nd position.​

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