25. Condensation Chemistry

Predict the product of the following reactions.

(a)

Propose a mechanism for each of the following reactions:

b.

What is the major product of each of the following reactions?

b.

What is the major product of each of the following reactions?

a.

What are the products of the following reactions?

g.

What are the products of the following reactions?

j.

What are the products of the following reactions?

i.

What is the product of each of the following reactions?

c.

d.

Show how the following compound can be prepared from starting materials that have no more than five carbons:

A Cannizzaro reaction is the reaction of an aldehyde that has no a-hydrogens with concentrated aqueous sodium hydroxide. In this reaction, half the aldehyde is converted to a carboxylic acid and the other half is converted to an alcohol. Propose a mechanism for the following Cannizzaro reaction:

Predict the product of the following reactions.

(i)

Predict the product of the following reactions.

(j)

Predict the product of the following reactions.

(b)

Predict the product of the following reactions.

(c)