What Will Be The Major Product When Acetaldehyde Condenses With Excess With Benzaldehyde?

What will be the major product when acetaldehyde condenses with excess with benzaldehyde? As the acetaldehyde adds to the reaction mixture, the base will remove a proton to form the enolate anion, which will be surrounded by benzaldehyde, but not much acetaldehyde. The major reaction will be acetaldehyde enolate reacting with benzaldehyde.

What is the major product of aldol condensation?

Aldol condensation reaction is a condensation reaction in which an enol or enolate ion reacts with a carbonyl compound to form β- hydroxy aldehyde or β- hydroxy ketone, followed by the dehydration to give a conjugated enone.

What happens when benzaldehyde reacts with acetaldehyde?

2-Acetaldehyde reacts with benzaldehyde (which has no alpha hydrogen atom) in the presence of a base to form an aldol which on heating yields cinnamaldehyde (unsaturated aldehyde).

What is the product of the aldol condensation reaction?

The product formed in aldol condensation is beta hydroxy aldehyde or beta hydroxy ketone.

What are the products formed when formaldehyde reacts with benzaldehyde in the presence of concentrated NaOH?

A mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives the product benzyl alcohol and sodium formate. It is a example of crossed Cannizzaro reaction.


Related guide for What Will Be The Major Product When Acetaldehyde Condenses With Excess With Benzaldehyde?


How many optical isomers are possible for the product formed from the condensation of benzaldehyde with acetaldehyde by the action of hot concentrated NaOH?

Claisen- Schimdt condensation between benzaldehyde and acetaldehyde produces two stereomers.


Which product is obtained by aldol condensation of a ketone?

11.15. 2 Background. The aldol condensation reaction produces β-hydroxyaldehyde (aldol) or β-hydroxyketones from two carbonylic compounds with at least a hydrogen atom at the α-position with respect to such groups. Starting from two different carbonyl compounds the reaction is called a cross-aldol condensation.


Does acetaldehyde give aldol condensation?

Acetaldehyde undergoes aldol condensation, but formaldehyde does not. Aldol condensation involves the addition of an aldehyde (or ketonic) group of one molecule of the carbonyl compound (aldehyde or ketone) with the α-hydrogen atoms of the other.


Which is the principle product when benzaldehyde is allowed?

Benzaldehyde readily undergoes autoxidation to form benzoic acid on exposure to air at room temperature.


Which type of reaction occurs when benzaldehyde reacts with conc Koh?

Treatment of benzaldehyde with concentrated aqueous sodium hydroxide results in the formation of benzyl alcohol and sodium benzoate (the Cannizzaro reaction, cf. formaldehyde).


Which compound is formed in aldol condensation?

An aldol condensation is an organic reaction in which an enol or an enolate ion reacts with a carbonyl compound to form a β- hydroxyaldehyde or β-hydroxyketone, followed by a dehydration to give a conjugated enone.


How do you name aldol condensation products?


Why is sodium hydroxide used in aldol condensation?

NaOH it undergoes self condensation as it contains alpha-hydrogen atom in its compound forming β-hydroxyaldehyde (an aldol) namely 3-Hydroxy butanal. This compound upon further heating will eliminate a molecule of water forming aldol condensation product namely Crotonaldehyde Or But-2-en-al.


What products are obtained when a mixture of benzaldehyde and formaldehyde is refluxed with concentrated potassium hydroxide?

Answer: The product formed will be benzyl alcohol and sodium methanoate.


What products are obtained when benzaldehyde is subjected to Cannizaro reaction?

The Cannizzaro reaction of benzaldehyde

Moreover the benzaldehyde molecule is converted into a corresponding alcoholate ion. The reaction terminates with the transfer of the proton from the benzoic acid to the alcoholate ion resulting in a conversion product, i.e. benzyl alcohol.


What happens when benzaldehyde is heated with concentrated Nios?

Benzaldehyde on heating with NaOH gives benzyl alcohol and sodium benzoate.


How many aldol condensation products may be formed by the reaction?

A crossed aldol condensation is a result of two dissimilar carbonyl compounds containing α-hydrogen(s) undergoing aldol condensation. Ordinarily, this leads to four possible products as either carbonyl compound can act as the nucleophile and self-condensation is possible, which makes a synthetically useless mixture.


How many products are formed during the reaction between acetaldehyde and propionaldehyde?

There are four possible products of aldol condensation between acetaldehyde and propanal. The aldol of acetaldehyde with itself will be one of the products. Similarly, one will be propanal with propanal. The final two aldols will be cross aldols.


How many products are formed during the reaction between acetaldehyde and propionaldehyde in presence of dilute base?

q Note that there are two different enolates, that of acetaldehyde and that of propanal. Also, there are two different carbonyl compounds, ethanal and propanal. This gives rise to four possible products, all of which are observed.


How do you find the major product of a reaction?


What are major and minor products?

Major and Minor Products

Out of the two possible products, the product formed following Markovnikov's rule is said to be the major product. The alternative product is known as the minor product.


What is an aldol product?

The aldol reaction is a means of forming carbon–carbon bonds in organic chemistry. These products are known as aldols, from the aldehyde + alcohol, a structural motif seen in many of the products. Aldol structural units are found in many important molecules, whether naturally occurring or synthetic.


What is aromatic ketone?

Aromatic ketones are important organic intermedi- ates in the industries of flavors, perfumes, pharmaceuticals, and agrochemicals. Traditionally, these ketones were pro- duced by Friedel-Crafts acylation of aromatic compounds using Lewis acids or strong protonic acids as catalysts.


What is aldol condensation Class 12?

Hence, the Aldol condensation reaction is an organic reaction in which a carbonyl compound reacts with enolate ion and leads to the formation of the β-hydroxy aldehyde or β-hydroxy ketone.


What is aldol condensation of ketone?

Aldol condensation: An addition reaction between two aldehydes, two ketones, or an aldehyde and a ketone, resulting in a β-hydroxy aldehyde or a β-hydroxy ketone. A typical aldol condensation reaction, in which acetone enolate is the nucleophile and another molecule of acetone is the electrophile.


What type of carbonyl compounds undergo aldol condensation?

All carbonyl compounds containing α−H or α−D undergo aldol condensation.


Why does acetaldehyde give aldol condensation?

Aldehydes having at least one α−H undergo Aldol condensation in the presence of a base to give α− hydroxy aldehydes (aldol). Since acetaldehyde has carbon so it goes under aldol condensation.


What type of aldehydes undergo aldol condensation?

All the aldehydes having α-hydrogen undergo Aldol condensation.


Is acetaldehyde an aldehyde?

Acetaldehyde (ethanal) is an aldehyde that is highly reactive and toxic. The main source of acetaldehyde is the consumption of alcohol. In vivo, ethanol is predominantly metabolized to acetaldehyde.


What products contain benzaldehyde?

Benzaldehyde and similar chemicals occur naturally in many foods. Most of the benzaldehyde that people eat is from natural plant foods, such as almonds. Almonds, apricots, apples, and cherry kernels contain significant amounts of amygdalin.


Which of the following reaction produces benzaldehyde?

Industrially, benzaldehyde is made by a process in which toluene is treated with chlorine to form benzal chloride, followed by treatment of benzal chloride with water. Benzaldehyde is readily oxidized to benzoic acid and is converted to addition products by hydrocyanic acid or sodium bisulfite.


Which of the following products is formed when benzaldehyde is treated with ch3mgbr and the addition product so obtained is subjected to acid hydrolysis?

Which of the following products is formed when benzaldehyde is treated with CH_(3)MgBr and the addition product so obtained is subjected to acid hydrolysis? tert-Butyl alcohol.


What happens when benzaldehyde is treated with Schiff's reagent?

Benzaldehyde gives tollens as well as schiffs test but does not give the solution test of fehling because benzaldehyde does not contain alpha hydrogen and can not form intermediate enolate to proceed further and thus does not react to the solution test of fehling, but aliphatic aldehydes provide the solution test of


What will be the end product when ortho methoxy benzaldehyde is treated with formaldehyde via Cannizzaro reaction?

Explanation: Benzaldehyde reacts with formaldehyde in the presence of alkali to form benzyl alcohol and formic acid.


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