
Concept explainers
(a)
Interpretation:
The product formed in the given reaction is to be stated.
Concept introduction:
Oxime belongs to the family of imines. The formula of oxime is

Answer to Problem 19.48AP
The product formed in the given reaction is cyclohexanone oxime in the presence of hydroxylamine and pyridine. The reaction is shown below.
Explanation of Solution
Cyclohexanone reacts with hydroxylamine to form the derivative of the oxime of the carbonyl compound. The nucleophilic addition takes place in the given reaction. The hydroxylamine is used as a nucleophile. The corresponding
Figure 1
The product formed in the given reaction is shown in Figure 1.
(b)
Interpretation:
The product formed in the given reaction is to be stated.
Concept introduction:
The reaction between

Answer to Problem 19.48AP
The product obtained in the given reaction is shown below.
Explanation of Solution
In the given reaction,
Figure 2
The treatment of
(c)
Interpretation:
The product formed in the given reaction is to be stated.
Concept introduction:
Ketones react with

Answer to Problem 19.48AP
The product formed in the given reaction is a hemiacetal as shown below.
Explanation of Solution
In the third reaction, the methylglyoxal reacts with
Figure 3
The reaction between methylglyoxal and
(d)
Interpretation:
The product formed in the given reaction is to be stated.
Concept introduction:
The cyclic ethers are ring compounds which contain nitrogen, sulfur and oxygen groups within the ring. The easy method for synthesis of cyclic ether is Williamson synthesis.

Answer to Problem 19.48AP
The product formed when the
Explanation of Solution
The compound
When acid is treating with
Figure 4
The product formed on the treatment of
(e)
Interpretation:
The product formed in the given reaction is to be stated.
Concept introduction:
Grignard reagents are

Answer to Problem 19.48AP
The compound
Explanation of Solution
The compound
Figure 5
The reaction between
(f)
Interpretation:
The product formed in the given reaction is to be stated.
Concept introduction:
The conversion of an aldehydic or ketonic group to alkene with the help of Wittig reagent is known as Wittig reaction.. The chemical name of Wittig reagent is triphenyl phosphonium ylide. The Wittig reagent gives good yields of alkene even when other

Answer to Problem 19.48AP
The product formed in the given reaction is
Explanation of Solution
The carbonyl compounds react with Wittig reagent. The product formed is alkenes. In this Wittig reaction, most of the ketone reacts with triphenyl phosphonium ylide to generate an alkene and triphenylphosphine oxide as shown below.
Figure 6
The treatment of haloalkane with triphenylphosphine gives the product
(g)
Interpretation:
The product formed in the given reaction is to be stated.
Concept introduction:
The Wittig reaction is the chemical reaction involves a change in an aldehyde or ketone converted into an alkene. The chemical name of Wittig reagent is triphenyl phosphonium ylide. The Wittig reagent gives good yields of alkene even when other functional groups are present on the aldehydes or ketone. However, as the steric hindrance of the aldehydes or ketone increases, the yield of alkene decreases.

Answer to Problem 19.48AP
The product formed in the given reaction is shown below.
Explanation of Solution
The reaction is Wittig reaction. The reagent used is is triphenyl phosphonium ylide.
In the first step, the treatment of triphenyl phosphonium ylide reacts with
Figure 7
The given reaction is shown in Figure 7 in the presence of Wittig reagent.
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Chapter 19 Solutions
Organic Chemistry, Ebook And Single-course Homework Access
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