1.

Which of the following reactions are Claisen condensation?

Answer»

`C_(6)H_(5)-CH =O overset(CH_(3)-overset(O)overset(||)C-OC_(2)H_(5) // OH^(-))to`
`C_(6)H_(5)-CH =O overset(CH_(3)-COOC_(2)H_(5) // OH^(-))to`
`C_(6)H_(5)-CH =O overset(CH_(3)-overset(O)overset(||)C-OC_(6)H_(5) // OH^(-))to`
`C_(6)H_(5)-CH =O overset(OH^(-))to`

SOLUTION :BENZALDEHYDE with carbonyl compound or ester having `alpha`-hydrogen ATOM undergoes Claisen condensation.


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