The total number of stereoisomers of the prod | vedclass

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(D) The reaction of $CH_3-CH=CH-COOH$ (crotonic acid) with $Br_2$ is an electrophilic addition reaction.This reaction involves the anti-addition of br

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$4$

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(D) The reaction of $CH_3-CH=CH-COOH$ (crotonic acid) with $Br_2$ is an electrophilic addition reaction.This reaction involves the anti-addition of bromine across the double bond.The product formed is $CH_3-CH(Br)-CH(Br)-COOH$ ($2$,$3$-dibromobutanoic acid).This molecule contains two chiral centers at $C_2$ and $C_3$.For a molecule with two chiral centers where the groups attached to the chiral carbons are different,the number of stereoisomers is $2^n$,where $n$ is the number of chiral centers.Here,$n = 2$,so the number of stereoisomers is $2^2 = 4$.

The total number of stereoisomers of the product formed in the reaction $CH_3-CH=CH-COOH \xrightarrow{Br_2} \text{Product}$ is:

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