Q.3.
Question
Question: What unsaturated carbonyl compound is formed by dehydration of each β-hydroxy carbonyl compound?
Step-by-Step Solution
Verified Answer
Answer
a.
b.
c.
1Step 1: Dehydration reaction
A dehydration reaction is the reverse of a hydration reaction. It involves the removal of a water molecule from the compound.
2Step 2: Formation of products
a. The reaction of 3-hydroxycyclohexanone with a base results in the formation of cyclohex-2-enone.
The reaction is shown below:
Product formation in a
b. The reaction of 3-hydroxy-2,4-diphenylbutanal with a base results in the formation of E or Z products.
The reaction is shown below:
Product formation in b
c. The reaction of 4-hydroxy-4-methylpentan-2-one with a base results in the formation of 4-methylpent-3-en-2-one.
The reaction is shown below:
Product formation in c
Other exercises in this chapter
Q.1.
Question: Draw the aldol product formed from each compound.
View solution Q.2.
Question: Which carbonyl compounds do not undergo an aldol reaction when treated with OH- in H2O ?
View solution Q.4.
Question: Acid-catalyzed dehydration of β-hydroxy carbonyl compounds occurs by the mechanism discussed in Section 9.8. With this in mind, draw a stepwise m
View solution Q.5.
Question: What aldehyde or ketone is needed to prepare each compound by an aldol reaction?
View solution