Concept explainers
Devise a synthesis of each compound using
a.
(a)
Interpretation: The synthesis of given compound from
Concept introduction: Alkynes acts as a nucleophile by removing its terminal proton. This brings negative charge on terminal carbon atom. The negatively charged alkyne is known as acetylide anion.
Answer to Problem 15.64P
The synthesis of given compound from
Figure 1
Explanation of Solution
The synthesis of acetylene
Figure 1
The synthesis of given compound from
(b)
Interpretation: The synthesis of given compound from
Concept introduction: Alkynes acts as a nucleophile by removing its terminal proton. This brings negative charge on terminal carbon atom. The negatively charged alkyne is known as acetylide anion.
Answer to Problem 15.64P
The synthesis of given compound from
Explanation of Solution
The synthesis of acetylene
Figure 2
The synthesis of given compound from
(c)
Interpretation: The synthesis of given compound from
Concept introduction: Alkynes acts as a nucleophile by removing its terminal proton. This brings negative charge on terminal carbon atom. The negatively charged alkyne is known as acetylide anion.
Answer to Problem 15.64P
The synthesis of given compound from
Explanation of Solution
The epoxidation of ethene, which is obtained from ethane, in the presence of m-chloroperbenzoic acid
Figure 3
The synthesis of acetylene is shown in Figure 1. Acetylene undergoes nucleophilic substitution reaction with oxirane in the presence of base to yield desired product as shown in Figure 4.
Figure 4
The synthesis of given compound from
(d)
Interpretation: The synthesis of given compound from
Concept introduction: Alkynes acts as a nucleophile by removing its terminal proton. This brings negative charge on terminal carbon atom. The negatively charged alkyne is known as acetylide anion.
Answer to Problem 15.64P
The synthesis of given compound from
Explanation of Solution
The synthesis of acetylene and bromoethane is shown in Figure 1. Acetylene undergoes nucleophilic substitution reaction with two molecules of bromoethane to form symmetrical alkyne. The triple bond of symmetrical alkyne is reduced to double bond on reaction with
Figure 5
The synthesis of given compound from
(e)
Interpretation: The synthesis of given compound from
Concept introduction: Alkynes acts as a nucleophile by removing its terminal proton. This brings negative charge on terminal carbon atom. The negatively charged alkyne is known as acetylide anion.
Answer to Problem 15.64P
The synthesis of given compound from
Explanation of Solution
The synthesis of acetylene and bromoethane is shown in Figure 1. Acetylene undergoes nucleophilic substitution reaction with two molecules of bromoethane to form symmetrical alkyne. The symmetrical alkyne converts into ketone on reaction with
Figure 6
The synthesis of given compound from
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