
Concept explainers
(a)
Interpretation: The reagents that are needed to convert the given compound into acetophenone
Concept introduction: The acylation of

Answer to Problem 21.12P
The reagents that are needed to convert the given compound into acetophenone
Explanation of Solution
The given compound is benzene. The conversion of benzene into acetophenone involves acylation of benzene ring.
The acylation of aromatic rings is facilitated by Friedel-Crafts acylation reaction. In this reaction, acyl chlorides are used as acylating agents, and Lewis acids like
The reagents that are needed to convert the given compound into acetophenone
(b)
Interpretation: The reagents that are needed to convert the given compound into acetophenone
Concept introduction: Lithium dialkylcuprate yields

Answer to Problem 21.12P
The reagents that are needed to convert the given compound into acetophenone
Explanation of Solution
The given compound is benzoylchloride.
Lithium dialkylcuprate yields ketone, when it is treated with an acyl chloride, followed by hydrolysis.. This reagent is obtained from the reaction of organolithium reagent with cuprous iodide,
Thus, the reagents that are needed to convert the given compound into acetophenone
The reagents that are needed to convert the given compound into acetophenone
(c)
Interpretation: The reagents that are needed to convert the given compound into acetophenone
Concept introduction: The oxymercuration reaction is an electrophilic addition reaction that converts an

Answer to Problem 21.12P
The reagents that are needed to convert the given compound into acetophenone are
Explanation of Solution
The given compound is ethynylbenzene. The conversion of ethynylbenzene into acetophenone involves oxymercuration of ethynylbenzene.
The oxymercuration reaction is an electrophilic addition reaction that converts an alkene into an alcohol and an alkyne into a ketone. The reagents required for this reaction are
The reagents that are needed to convert the given compound into acetophenone are
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Chapter 21 Solutions
PKG ORGANIC CHEMISTRY
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