The correct IUPAC name of 2-ethyl-3-pentyne i | vedclass

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Question

(C) The structure $2-$ethyl$-3-$pentyne is drawn by placing an ethyl group at position $2$ of a $5-$carbon chain containing a triple bond at position

Vedclass · Accepted Answer

$4-$methylhex$-2-$yne

Vedclass · Answer

(C) The structure $2-$ethyl$-3-$pentyne is drawn by placing an ethyl group at position $2$ of a $5-$carbon chain containing a triple bond at position $3$.
By expanding the structure,we identify the longest carbon chain containing the triple bond.
The longest chain consists of $6$ carbon atoms.
Numbering the chain to give the lowest possible locant to the triple bond,we start from the right side.
The triple bond is at position $2$ and a methyl group is at position $4$.
Therefore,the correct $IUPAC$ name is $4-$methylhex$-2-$yne.

The correct $IUPAC$ name of $2-$ethyl$-3-$pentyne is:

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