Sage-Tips

Which of the aldehyde is most reactive?

Acetone and benzophenone come under ketones and benzaldehyde and acetaldehyde are compounds of the aldehyde group.

Is formaldehyde more reactive than aldehyde?

Because in formaldehyde ,HCHO there is no electron donating gp to reduce the density of C atom of CHO gp . i. e.why HCHO is more reactive than other aldehydes.

Which is more reactive among HCHO and CH3CHO?

of alkyl groups also increases the steric hindrance making it less reactive. Thus, in general, HCHO is more reactive than CH3CHO towards addition of nucleophile HCN.

Which is more reactive among formaldehyde or acetaldehyde?

Secondly , CH3 group in acetaldehyde decreases the positive charge on cabonyl carbon by +I effect to some extect which is not so in the case of formaldehyde, Since , Nu attack is favourable with more positive charge and less hinderance at carbonyl carbon , hence we conclude that formaldehyde is more reactive than …

Which of the following is least reactive aldehyde?

benzaldehyde
Least reactive aldehyde is benzaldehyde due to absence of α− hydrogen.

Why are aldehydes so reactive?

Aldehydes are usually more reactive toward nucleophilic substitutions than ketones because of both steric and electronic effects. In aldehydes, the relatively small hydrogen atom is attached to one side of the carbonyl group, while a larger R group is affixed to the other side.

Why formaldehyde is more reactive than acetaldehyde and acetone?

Due to this the electron density on carbonyl carbon increases making it less electrophilic ,for the attack of a nucleophile while in case of formaldehyde there are no methyl groups so it is more reactive than acetone. …

Why acetaldehyde is more reactive than acetone?

1). In acetone the carbonyl compound is surrounded by two CH3 grps so coming nucleophile less approaches to the carbonyl compound. 2) Aldehydes are more electrophilic than ketones so acetaldehyde are more reactive than acetone.

Why Hcho is most reactive?

Because in formaldehyde ,HCHO there is no electron donating gp to reduce the density of C atom of CHO gp . while other higher members have electron donating gp means alkyl gp which increases election density at C atom of CHO gp through +ve inductive effect. i. e.why HCHO is more reactive than other aldehydes.

Which is more reactive c6h5cho or CH3CHO?

​CH3CHO will react faster than that of C6H5CHO. This is explained as: When R1 is phenyl group, the positvely charged carbon atom (where the CN- will attack) would be more stable before attacking of cyanide ion due to resonance.

Which among the following is an aldehyde?

Detailed Solution. Propanal is an example of an aldehyde functional group.

Which one of the following is aldehyde?

Propanal is an example of Aldehyde.

Why is methanal the most reactive aldehyde and ketone?

Clarification: Methanal is the most reactive among aldehydes and ketones due to electronic and stearic reasons. Methanal (HCHO) does not have any alkyl groups that release electrons toward carbonyl carbon, thus making it more electrophilic. Also, presence of only two H atoms do not provide any hinderance to the attack of incoming nucleophile.

Is formaldehyde more reactive than other aldehydes?

Yes, formaldehyde is the most reactive almost all the aldehydes cause is no methylene grp attached to it. As the aldehyde increases in length there are more bulky group attached which decreses the positive inductive effect on the carbon of the aldehydic grp. Methylene group induces positive inductive effect over aldehydic grp.

Why do ketones and aldehydes have a double bond?

Clarification: Aldehydes and ketones have a polar CO group which also has a double bond. The incoming nucleophile attacks the sp2 hybridised carbon, thus breaking the double bond and converting it into sp3, and forming a tetrahedral alkoxide intermediate.

Why is methylene aldehyde acidic?

The more the bulky methylene grp the more the hinderece created for nucleophilic substitution. Though it is aldehyde it can also be said that it is acidic because it gives it H+ ions in aqueous medium. What is the difference between the Sandmeyer reaction and the Gattermann reaction?