Advertisements
Advertisements
Question
What is meant by the following term? Give an example of the reaction in the following case.
Schiff’s base
Advertisements
Solution
Aldehydes and ketones react with primary aliphatic or aromatic amines to form azomethine or Schiff's base.
\[\ce{\underset{Aldehyde}{R - CH = O} + \underset{1° amine}{H2N - R'} ->[H+][Heat] \underset{Schiff’s base}{R - CH = N - R'} + H2O}\]
APPEARS IN
RELATED QUESTIONS
How are the following compounds prepared?
benzaldehyde from benzene
Write the structures of the main products when acetone (CH3 − CO − CH3) reacts with the following reagent :
H2N − NHCONH2/H+
Write the products formed when CH3CHO reacts with the following reagents : HCN
Arrange the following compound in increasing order of its reactivity in nucleophilic addition reactions.
Ethanal, Propanal, Propanone, Butanone.
Hint: Consider steric effect and electronic effect.
Give plausible explanation for the following:
Cyclohexanone forms cyanohydrin in good yield but 2, 2, 6 trimethylcyclohexanone does not.
Complete the synthesis by giving missing starting material, reagent or product.
Explain the mechanism of alkaline hydrolysis of tert-butyl bromide with energy profile diagram.
Write balanced chemical equations for action of ammonia on - acetone
What are amines?
Which of the following compounds is most reactive towards nucleophilic addition reactions?
Alkenes 
and carbonyl compounds 
, both contain a π bond but alkenes show electrophilic addition reactions whereas carbonyl compounds show nucleophilic addition reactions. Explain.
Reaction of aqueous sodium hydroxide on chlorobenzene gives which of the following products?
In the following reaction
\[\ce{Carbonyl compound + MeOH <=>[HCl] acetal}\]
Rate of the reaction is the highest for ______.
Which of the following is most reactive in nucleophilic addition reactions?
Out of p-tolualdehyde and p-nitrobenzaldehyde, which one is more reactive towards nucleophilic addition reactions, why?
Write the structure of the product formed when acetone reacts with 2, 4 DNP reagent.
Draw structures of the following derivative.
The ethylene ketal of hexan-3-one
Draw structure of the following derivative.
The ethylene ketal of hexan-3-one
Draw the structure of the following derivative.
Acetaldehydedimethylacetal
