Which of the following will go aldol condensation?

Which of the following will go aldol condensation?

Aldehydes and ketones having at least one α-hydrogen undergo aldol condensation. The compounds (ii) 2-methylpentanal, (v) cyclohexanone, (vi) 1-phenylpropanone, and (vii) phenylacetaldehyde contain one or more α-hydrogen atoms. Therefore, these undergo aldol condensation.

What is a crossed aldol condensation reaction?

A crossed aldol condensation uses two different aldehyde and/or ketone reactants. Such reactions usually give a mixture of multiple condensation products, because there are two or more possible enolate nucleophiles, and two different carbonyl electrophiles.

Why is oh a leaving group in aldol condensation?

You cannot normally eliminate water from an alcohol in basic solution as hydroxide is a bad leaving group.It is the carbonyl group that allows elimination here: these are E1cB reactions, with a second enolization allowing the loss of OH−. The key to what is going on is the carbonyl group.

What is the difference between aldol addition and aldol condensation reaction?

Subsequent dehydration produces an α,β-unsaturated aldehyde or ketone. The addition step without subsequent dehydration is an aldol reaction. The main difference between aldol condensation and Cannizzaro reaction is that aldol condensation is a coupling reaction, whereas Cannizzaro reaction is a redox reaction.

What is aldol condensation used for?

The reaction is commonly used to produce solvents such as alcohol isophorone and diacetone. It works as an intermediate for perfume production. It is also used in pharmaceutical manufacturing, unsaturated ketones and chalcones known as aromatic ketones. Usually, it is used to create plasticizers as well.

What is meant by condensation reaction?

Condensation reaction, any of a class of reactions in which two molecules combine, usually in the presence of a catalyst, with elimination of water or some other simple molecule. The combination of two identical molecules is known as self-condensation.

What is the difference between condensation and evaporation?

Condensation is the change from a vapor to a condensed state (solid or liquid). Evaporation is the change of a liquid to a gas.

What are the similarities between evaporation and condensation?

The terms evaporation and condensation are both steps in the water cycle. Evaporation occurs when a liquid (water in the water cycle) is heated and changes from a liquid to a gas. Condensation occurs when water vapor cools and changes from a gas to a liquid.

What is evaporation and condensation explain with example?

Evaporation Is the Opposite of Condensation While condensation occurs when a gas or vapor changes into liquid form, evaporation happens when a liquid substance changes to gaseous form. For example, when the morning dew burns off, it does so through the process of evaporation.

What is the process of evaporation and condensation?

Evaporation and condensation are two processes through which matter changes from one state to another. Matter can exist in three different states: solid, liquid or gas. In evaporation, matter changes from a liquid to a gas. In condensation, matter changes from a gas to a liquid.

What factors affect evaporation and condensation?

The water cycle relies on the processes of evaporation and condensation.

• Evaporation.
• Adding energy (heating) increases the rate of evaporation.
• Condensation.
• Removing energy (cooling) increases the rate of condensation.
• Evaporation and Condensation Happen at the Same Time.
• Other factors affect evaporation and condensation.