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Question

(A) The given structure is a hydrocarbon with a double bond between two carbon atoms. To name it according to $IUPAC$ rules: $1$. Identify the longest

Vedclass · Accepted Answer

$2,3-$dimethylbut$-2-$ene

Vedclass · Answer

(A) The given structure is a hydrocarbon with a double bond between two carbon atoms. To name it according to $IUPAC$ rules: $1$. Identify the longest carbon chain containing the double bond. The longest chain has $4$ carbon atoms,so the parent alkane is butane,and the alkene is but$-2-$ene. $2$. Number the chain from the end that gives the double bond the lowest locant. In this case,numbering from either side gives the double bond the position $2$. $3$. Identify the substituents. There are two methyl groups attached at positions $2$ and $3$. $4$. Combining these,the $IUPAC$ name is $2,3-$dimethylbut$-2-$ene.

The $IUPAC$ name of the given compound is:

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