Which one of the following reactions can be u | vedclass

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(B) The Reformatsky reaction involves the condensation of an aldehyde or ketone with an $\alpha$-halo ester in the presence of zinc metal to produce a

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Reformatsky reaction

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(B) The Reformatsky reaction involves the condensation of an aldehyde or ketone with an $\alpha$-halo ester in the presence of zinc metal to produce a $\beta$-hydroxy ester. Upon hydrolysis,the $\beta$-hydroxy ester yields a $\beta$-hydroxy acid. The general reaction is: $R_2C=O + BrCH_2COOR'$ $\xrightarrow{Zn} R_2C(OH)CH_2COOR'$ $\xrightarrow{H_3O^+} R_2C(OH)CH_2COOH$.

Which one of the following reactions can be used for the preparation of $\beta$-hydroxy acid derivatives?

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