Why is the enone product favored to be formed under the shown conditions rather than the aldol product?

Q: (b) Why is the Claisen-Schmidt reaction a special type of aldol condensation?     one of the…

A: Answers of the above questions given below.

Q: Which is a reasonable intermediate in an aldol reaction of propanal? HO

A: Aldol reaction is a type of condensation reaction in which carbonyl compound having alpha H atom…

Q: Which of the following ketones would be the best choice to use for a crossed aldol reaction with…

A: In this question, we will see that which ketones worked equally well for crossed Aldol Condensation…

Q: Draw the expected product from the reaction here:

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Q: The first step of the dimedone reaction involves an aldol reaction. Here is a simpler version -…

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Q: enolate base enolate base

A: The first compound contains an active methylene group. The alpha proton carbonyl group is acidic in…

Q: In other reactions, both reactants may have acidic Hydrogens, leading to two different products.…

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Q: Will compound A or compound B produce more aldol product at equilibrium? Why? H3C `CH3 FH,C `CH,F A…

A: In aldol condensation,at least one of the two substrates must have an alpha hydrogen. It is because…

Q: Draw the major product of the aldol addition reaction between two of these aldehydes with the…

A: In Aldol reaction first of all carbonyl compound having alpha hydrogen form nucleophile when react…

Q: What starting materials are needed to synthesize each compound using an aldol or similar reaction?

A: Given compound,

Q: The product below can be synthesized by a Robinson annulation, which is a Michael addition followed…

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Q: Draw the product of the reaction of the following compound with a base:

A: Given diketone compound,

Q: OH

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Q: The structures of two molecules, a B-keto ester and a B-unsaturated ketone, are given below.…

A: The reaction of two different types of esters in the presence of sodium alkoxide gives a beta-keto…

Q: What aldol addition product is formed from each of the following compounds?

A: We need to give the aldol addition product of given compound.

Q: Draw the products formed in the crossed aldol reaction of phenylacetaldehyde (C6H5CH2CHO) with each…

A: (a)Reaction of phenylacetaldehyde with CH2 (COOEt) 2 is shown in below

Q: Show how to prepare each a,ß-unsaturated aldehyde or ketone by condensation. an aldol CHO

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Q: Draw the product of dehydration of aldol product Q.Cyclopentanone

A: To draw the product of dehydration of aldol product of Cyclopentanone

Q: Can 2,4-pentanedione undergo an intramolecular aldol addition? If so, why? If not, why not?

A: Aldol addition in organic chemistry is a chemical reaction in which an enol or an enolate ion…

Q: Is the reaction possible? are there any ways to synthesize the aldol product without having other…

A: The given reaction is an example of cross aldol condensation reaction. Various products are possible…

Q: What starting material is needed to synthesize the following reaction? Aldol condensation ?? H

A: Aldol condensation reaction happens in two carbonyl group in the presence of the dilute NaOH.  In…

Q: which of the following is not expected to result in an efficient crossed aldol condensation reaction

A: The Crossed Aldol condensation reaction takes place between two different molecules of an aldehyde…

Q: Which of the following pars will give two cross-aldol products? and and and (HC),C CHO and

A: Cross aldol condensation are those in which two different aldehydes are used.

Q: Which Syn product of this Aldol reaction would be favoured?

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Q: one `H Benzaldehído Acetona Dibenzalacetona

A:

Q: What is the first step in the acid-catalyzed aldol condensation reaction. Attack of the…

A: Hi, we are supposed to answer one question. To get the remaining questions solved please mention the…

Q: What aldol addition product is formed from the following compound?

A: The cyclohexanone shows an aldol condensation reaction as it contains acidic proton (H+) at the…

Q: NaoH

A: Two carbonyl compounds, out of which one has an α-H atom, when react with each other form β-hydroxy…

Q: Draw the structure of the major organic product of the following reaction. Predict whether the…

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Q: Draw the major product of the aldol addition reaction between two of these aldehydes with the…

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Q: What product would you expect to obtain from aldol cyclization of hexanedial, OHCCH2CH2CH2CH2CHO?

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Q: What aldol product is formed when two molecules of butanal react together in the presence of base?…

A: Treatment of butanal in the presence of strong base forms a resonance-stabilized enolate ion, which…

Q: In a mixed aldol condensation with unknown aldehydes and ketones reaction what type of isomers can…

A: By analysing geometry of aldol products after E1CB elimination reaction.

Q: Show how to prepare each a,B-unsaturated aldehyde condensation. or ketone by an aldol

A: With alpha hydrogen containing carbonyl compounds in presence of dilute base follwed by heating…

Q: What aldol product is formed when two molecules of butanal react together in the presence of base?…

A: Aldol condensation takes place in only those aldehyde and ketone compounds which possess atleast one…

Q: aldol product aldol product

A: In Aldol condensation reaction, KOH base abstract H+ ion from alpha carbon in Carbonyl Compound and…

Q: Choose all the compounds that will be able to produce aldol condensation product from the reaction…

A: The aldehyde and ketones undergo a numerous reactions due to the acidic nature of alpha-hydrogen.…

Q: ly the structures of reactant(s) or product(s) for the following aldol and Claisen reactions. он,…

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Q: Does it matter whether acetone is added first to the eq. NaOH solution then  the benzaldehyde, or if…

A: Aldol condensation is a condensation reaction for an enol or an enolate ion. The final product form…

Q: Based on the IR of the aldol product from the reaction, did the aldol condensation occur? How can…

A: Infrared spectroscopy (IR) is used for the identification of functional groups present in the…

Q: What is Crossed aldol reactions ?

A: Aldol reactions between two different carbonyl compounds are known as crossed aldol reactions.

Q: Show how to prepare   a,b-unsaturated aldehyde by an aldol reaction followed by dehydration of the…

A: Aldol reaction is a fine method to introduce a carbon-carbon bond and increase the number of carbon…

Q: The molecule shown above can be the acceptor for either an aldol or Claisen condensation reaction,…

A: Molecule presence of -CHO group and ester group.both functional groups having CO group  CO(…

Q: Show how to prepare   a,b-unsaturated aldehyde by an aldol reaction followed by dehydration of the…

A: In aldol reaction, first formation of enolate ion takes place in acidic or basic medium and then the…

Q: NaH THE OEt

A: Given reaction is the Claisen reaction. In this reaction one ester and a carbonyl compound react.

Q: OH reactant product

A: At first halogenation is done which substitute 3° H present in the compound followed by…

Q: Show the mechanism of the given aldol reaction.

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Q: enolate 人: base enolate base

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Reactions at the Alpha Carbon Atom

The position next to the ketone or aldehyde functional group is termed as alpha position and the reaction which occurs at alpha position is called alpha substitution reaction. In an alpha substitution reaction, the alpha proton atom is substituted by an electrophile by the formation of an enol intermediate or enolate ion intermediate. Most of the carbonyl compounds go through an alpha substitution reaction.