(a)
Interpretation:
The product of the aldol reaction of the given compound and the
Concept introduction:
Aldol reaction is an addition reaction of
(a)
Explanation of Solution
The aldol reaction product for the given compound has to be drawn.
The aldol reaction yield a
Base abstracts a proton from the
(b)
Interpretation:
The product of the aldol reaction of the given compound and the
Concept introduction:
Aldol reaction is an addition reaction of aldehydes and ketones. Aldol reaction is a reversible reaction and occurs in the presence of a strong base like sodium hydroxide. One molecule (aldehyde or ketone) acts a nucleophile and attacks the electrophilic carbon center of the other molecule to give the addition product. The product is named
(b)
Explanation of Solution
The aldol reaction product for the given compound has to be drawn.
The aldol reaction yield a
Base abstracts a proton from the
(c)
Interpretation:
The product of the aldol reaction of the given compound and the
Concept introduction:
Aldol reaction is an addition reaction of aldehydes and ketones. Aldol reaction is a reversible reaction and occurs in the presence of a strong base like sodium hydroxide. One molecule (aldehyde or ketone) acts a nucleophile and attacks the electrophilic carbon center of the other molecule to give the addition product. The product is named
(c)
Explanation of Solution
The aldol reaction product for the given compound has to be drawn.
The aldol reaction yield a
Base abstracts a proton from the
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Chapter 19 Solutions
Organic Chemistry, Loose-leaf Version
- Give the IUPAC name of the reactants that would give the following aldol condensation product.arrow_forwardWhy is it not advisable to use aqueous hydrochloric acid in a Grignard reaction of a ketone? A) The Grignard reagent will react with the acid and cannot react with the ketone. B) The ketone will be protonated and will become unreactive. C) The ketone will form an unreactive enol. D) The Grignard reagent won't dissolve in aqueous solutionsarrow_forward2-Pentylcinnamaldehyde, commonly called flosal, is a perfume ingredient with a jasminelike odor. Flosal is an α,β-unsaturated aldehyde made by a crossed aldol reaction between benzaldehyde (C6H5CHO) and heptanal (CH3CH2CH2CH2CH2CH2CHO), followed by dehydration. Draw a stepwise mechanism for the following reaction that prepares flosal.arrow_forward
- What is the role of phosphoric acid in the synthesis of cyclohexene? it is an antioxidant that prevents free radical side reactions it is a safe, non-toxic solvent it lowers the boiling point of the reaction mixture (a colligative property of adding phosphoric acid to water) it protonates the hydroxyl of cyclohexanol to make it a better leaving grouparrow_forwardDraw the enol form of the following ketonearrow_forward4. Give the structures of the aldol products that form when each of the following compounds or mixtures is treated with NAOH. a) Butanal b) Cyclopentanone c) Acetophenone d)-Chlorobenzaldehyde and 2,2-dimethylcyclohexanonearrow_forward
- Answer the following question about curcumin, a yellow pigmentisolated from turmeric, a tropical perennial in the ginger family and aprincipal ingredient in curry powder. Most enols, compounds that contain a hydroxy group bonded to a C=C, are unstable and tautomerize to carbonyl groups. Draw the keto form of the enol of curcumin, and explain why the enol is more stable than many other enols.arrow_forwardProvide a chemical reaction on how the following compounds can be synthesized via aldol condensation. note that the starting reactants should be benzaldehyde and a ketonearrow_forward2-Pentylcinnamaldehyde, commonly called flosal, is a perfume ingredient with a jasminelike odor. Flosal is an α,β-unsaturated aldehyde made by a crossed aldol reactionbetween benzaldehyde (C6H5CHO) and heptanal (CH3CH2CH2CH2CH2CH2CHO), followed by dehydration. Draw a stepwise mechanism for the following reaction that prepares flosal.arrow_forward
- Draw structures for the carbonyl electrophile and enolate nucleophile.arrow_forwardThe Stork reaction is a condensation reaction between an enamine donor and an α,β-unsaturated carbonyl acceptor. The overall reaction consists of a three-step sequence of formation of an enamine from a ketone, Michael addition to an α,β-unsaturated carbonyl compound, and hydrolysis of the enamine in dilute acid to regenerate the ketone. Consider the Stork reaction between acetophenone and 3-buten-2-one. Draw the structure of the product of the enamine formed between acetophenone and pyrrolidine. Draw the structure of the Michael addition product. Draw the structure of the final product.arrow_forwardAcetal formation must be catalyzed by an acid. Explain why it cannot be catalyzed by CH3O-.arrow_forward
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