Predict the product of the following reaction | vedclass

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(B) The reaction is a bromolactonization. $1$. The alkene reacts with $Br_2$ to form a cyclic bromonium ion intermediate. $2$. The carboxylate ion (fo

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(B) The reaction is a bromolactonization. $1$. The alkene reacts with $Br_2$ to form a cyclic bromonium ion intermediate. $2$. The carboxylate ion (formed by $NaHCO_3$ deprotonating the carboxylic acid) acts as an internal nucleophile. $3$. The carboxylate oxygen attacks the more substituted carbon of the bromonium ion,leading to ring closure and forming a five-membered lactone ring (a cyclic ester) with a $CH_2Br$ group attached to the ring. $4$. The final product is $5-(bromomethyl)dihydrofuran-2(3H)-one$.

Predict the product of the following reaction: $CH_2=CH-CH_2-CH_2-COOH \xrightarrow{Br_2, NaHCO_3} \text{Product}$

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