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Question

Which of the statements is/are correct?

This question has multiple correct options

A

In Reformatsky reaction, $α -$ bromo ester reacts with aldehyde or ketone in the presence of $M g$ to give $β$ -hydroxy ester

B

In Reformatsky reaction, $α -$ bromo ester reacts with aldehyde or ketone in the presence of $Z n$ to give $β -$ hydroxy ester

C

Citric acid is prepared by the reaction of $α$ -bromoethyl oxaloacetate in the presence of $Z n$ followed by hydrolysis

D

Citric acid is prepared by the fermentation of molasses in the presence of Aspergillus wenti enzymes

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Solution

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Correct options are B) , C) and D)

The statement A is incorrect and the statements B, C and D are correct.

In Reformatsky reaction, α−bromo ester reacts with aldehyde or ketone in the presence of Zn (and not Mg) to give β−hydroxy ester.

$B r C H_{2} C O O C H_{3} + C H_{3} C H O Z n C H_{3} (H O) C H_{2} C O O C H_{3}$

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