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Chapter 23: Q12. (page 924)

Question: Draw the products of each reaction. Assume excess halogen is present.

Short Answer

Expert verified

Answers

The products formed in the given reactions are shown below.

Step by step solution

01

Halogenation in bases

Halogenation is carried out by treating a carbonyl compound that has alpha hydrogens with a halogen in the presence of a base. When excess halogens are present, all the possible acidic protons get replaced with halides.

02

Mechanism involved in the halogenation in bases

The first step involves the abstraction of the proton by the base. The second step is the formation of an enolate. The third step involves the attack of enolate on electrophile in the presence of the base.

Representation of the halogenation in the presence of the base

03

The products formed in the given reactions

Considering all the explanations, the products formed are shown below.

Representation of the products formed by halogenation in bases

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Most popular questions from this chapter

Question: What alkyl halides are needed to prepare each carboxylic acid using the malonic ester synthesis?

Question: Rank the labeled protons in each compound in order of increasing acidity.

Question: Treatment of W with CH3Li, followed by CH3l, affords compound Y (C7H14O ) as the major product. Y shows a strong absorption in its IR spectrum at , and its 1 H NMR spectrum is given below. (a) Propose a structure for Y. (b) Draw a stepwise mechanism for the conversion of W to Y.

Question: Which carbonyl compound in each pair exhibits the higher percentage of the enol tautomer?

Question: What product is formed when each compound is treated first with LDA in THF solution at low temperature, followed by CH3CH2l?
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