What is the product of the following S_N2 rea | vedclass

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(D) The reaction proceeds via an $S_N2$ mechanism,which involves a Walden inversion at the chiral center where the leaving group $(-OTs)$ is attached.

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(D) The reaction proceeds via an $S_N2$ mechanism,which involves a Walden inversion at the chiral center where the leaving group $(-OTs)$ is attached. $1$. The starting material has the $-OTs$ group on a wedge. $2$. The $Br^-$ nucleophile attacks from the opposite side (dash),resulting in the inversion of configuration. $3$. The resulting product has the $-Br$ group on a dash. $4$. Converting this structure to a Fischer projection involves rotating the molecule to place the carbon chain vertically with the most oxidized group $(-COOMe)$ at the top. $5$. Following the stereochemical transformation,the correct Fischer projection corresponds to option $D$.

What is the product of the following $S_N2$ reaction?

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