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-$I$ (Structure)	Column-$II$ ($\text{IUPAC}$ Name)
$A$. $3-$Bromocyclohexanol	$1$. $2, 5$-Dimethylhexane-$1, 3$-diol
$B$. $CH_3-C(Br)=C(CH_3)-CH_2OH$	$2$. $3$-Bromocyclohexanol
$C$. $CH_3-CH(CH_3)-CH_2-CH(OH)-CH(CH_2OH)-CH_3$	$3$. $\text{Hex-}1\text{-en-}3\text{-ol}$
$D$. $CH_2=CH-CH(OH)-CH_2-CH_2-CH_3$	$4$. $2$-Bromo-$3$-methylbut-$2$-en-$1$-ol

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

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