Claisen Condensation

Q. The reaction
$C_6{H}_{5}CHO+C{H}_{3}CHO\to C_6{H}_{5}CH=CH-CHO$
is known as

1. Perkin's reaction

2. Claisen condensation

3. Benzoin condensation
4. Cannizzaro's reaction

Q. Benzaldehyde reacts with X to produce cinnamaldehyde in Claisen condensation. X is :

1. formaldehyde
2. acetaldehyde
3. crotonaldehyde
4. propanaldehyde

Q. The reaction
$C_6{H}_{5}CHO+C{H}_{3}CHO\to C_6{H}_{5}CH=CH-CHO$
is known as

1. Perkin's reaction

2. Claisen condensation

3. Benzoin condensation
4. Cannizzaro's reaction

Q.

Self-condensation of two moles of ethyl acetate in presence of Sodium ethoxide yields:

1. ethyl propionate

2. ethyl butyrate

3. acetoacetic ester

4. methyl acetoacetate

Q.

In which of the following reactions, new carbon-carbon bond is not formed?

1. Cannizzaro’s reaction

2. Aldol condensation

3. Claisen’s reaction

4. Friedel-Crafts reaction