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(a)
Interpretation: The given compounds has to be prepared from methyl phenyl
Concept introduction: A crossed-claisen condensation is also a condensation reaction between a ketone and an ester. Primarily one product will form from crossed-claisen condensation when one of the ketone or easter do not have any alpha hydrogens.
If both ester and ketone have alpha hydrogens then primarily one product can form if LDA is used to remove alpha hydrogen to form the enolate ion. The other compound is added slowly to the enolate ion.
(b)
Interpretation: The given compounds has to be prepared from methyl phenyl ketone.
Concept introduction: A crossed-claisen condensation is also a condensation reaction between a ketone and an ester. Primarily one product will form from crossed-claisen condensation when one of the ketone or easter do not have any alpha hydrogens.
If both ester and ketone have alpha hydrogens then primarily one product can form if LDA is used to remove alpha hydrogen to form the enolate ion. The other compound is added slowly to the enolate ion.
(c)
Interpretation: The given compounds has to be prepared from methyl phenyl ketone.
Concept introduction: A crossed-claisen condensation is also a condensation reaction between a ketone and an ester. Primarily one product will form from crossed-claisen condensation when one of the ketone or easter do not have any alpha hydrogens.
If both ester and ketone have alpha hydrogens then primarily one product can form if LDA is used to remove alpha hydrogen to form the enolate ion. The other compound is added slowly to the enolate ion.
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Chapter 17 Solutions
Pearson eText Organic Chemistry -- Instant Access (Pearson+)
- Show how the following compounds can be synthesized from cyclohexanol.arrow_forwardIdentify all carbonyl compounds that can undergo nucleophilic addition reactions from the following:arrow_forwardIndicate how the following compounds can be synthesized from cyclohexanone and any other necessary reagents:arrow_forward
- What products are formed by acidic hydrolysis of the following compound? benzaldehyde and butan-1-d benzeie acid and butan-2-d 2-methylbutanoic acid and phenol benzoic acid and methyl ethyl ketonearrow_forwardShow how the benzaldehyde can be prepared from benzene:arrow_forwardWhat product is obtained when the following compound undergoes two successive elimination reactions?arrow_forward
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