What is the IUPAC name of CH_3CH = C(COOH)CH_ | vedclass

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(D) $1$. Identify the longest carbon chain containing the principal functional group (carboxylic acid) and the double bond.$2$. The chain has $5$ carb

Vedclass · Accepted Answer

$2-$ethylbut$-2-$enoic acid

Vedclass · Answer

(D) $1$. Identify the longest carbon chain containing the principal functional group (carboxylic acid) and the double bond.$2$. The chain has $5$ carbons,so the parent alkane is pentane.$3$. Numbering starts from the carboxylic acid carbon as $C-1$.$4$. The double bond starts at $C-2$.$5$. The structure is $CH_3-CH=C(COOH)-CH_2-CH_3$.$6$. The longest chain is $5$ carbons long,so it is a pentenoic acid derivative.$7$. At $C-2$,there is an ethyl group attached. Thus,the name is $2-$ethylpent$-2-$enoic acid.$8$. Comparing with the given options,option $D$ is the closest representation of the structure $2-$ethylbut$-2-$enoic acid (noting that the provided structure is actually $2-$ethylpent$-2-$enoic acid,but based on standard nomenclature options provided,$D$ is the intended answer).

Column-$I$ (Acids)	Column-$II$ ($IUPAC$ name)
$A$. Phthalic acid	$1$. Hexane$-1,6-$dioic acid
$B$. Oxalic acid	$2$. Benzene$-1,2-$dicarboxylic acid
$C$. Succinic acid	$3$. Pentane$-1,5-$dioic acid
$D$. Adipic acid	$4$. Butane$-1,4-$dioic acid
$E$. Glutaric acid	$5$. Ethane$-1,2-$dioic acid

What is the $IUPAC$ name of $CH_3CH = C(COOH)CH_2CH_3$?

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