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Question

Upon treatment with Al(OEt)3 followed by usual reactions (work up), CH3CHO will produce:

A
only CH3COOCH2CH3
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B
A mixture of CH3COOH and EtOH
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C
Only CH3COOH
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D
Only EtOH
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Solution

The correct option is A only CH3COOCH2CH3

The Tishchenko Reaction is a disproportionation reaction that allows the preparation of esters from two equivalents of an aldehyde.Catalysts are aluminium alkoxides or sodium alkoxides.

CH3CHO on treatment with aluminium alkoxide gives ester CH3COOCH2CH3 only as it undergoes Tischenko reaction.

499978_470185_ans.GIF

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