Advertisements
Advertisements
प्रश्न
Complete the synthesis by giving missing starting material, reagent or product.
\[\ce{C6H5CHO ->[H2NCONHNH2]}\]
उत्तर १
\[\begin{array}{cc}
\phantom{....................................}\ce{O}\\
\phantom{....................................}||\\
\ce{\underset{Benzaldehyde}{C6H5CHO} + \underset{Semicarbazide}{H2NCONHNH2} -> C6H5CH \underset{Benzaldehyde semicarbazide}{= NNHC - NH2} + H2O}\end{array}\]
उत्तर २
APPEARS IN
संबंधित प्रश्न
How are the following compounds prepared?
benzaldehyde from benzene
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.
What is meant by the following term? Give an example of the reaction in the following case.
Semicarbazone
Predict the products formed when cyclohexanecarbaldehyde reacts with the following reagents.
Excess ethanol and acid
Give plausible explanation for the following:
Cyclohexanone forms cyanohydrin in good yield but 2, 2, 6 trimethylcyclohexanone does not.
Give plausible explanation for the following:
There are two −NH2 groups in semicarbazide. However, only one is involved in the formation of semicarbazones.
How are the following compounds prepared?
benzaldehyde from benzoyl chloride
Write balanced chemical equations for action of ammonia on - acetone
How will you convert benzoic acid to m-bromobenzoic acid?
Alkenes 
and carbonyl compounds 
, both contain a π bond but alkenes show electrophilic addition reactions whereas carbonyl compounds show nucleophilic addition reactions. Explain.
Grignard reagent on reaction with acetone forms.
A Idol condensation will not be observed in
Acetaldehyde and acetone differ in their reaction with
Which will undergo faster nucleophilic addition reaction?
Acetaldehyde or Propanone
The increasing order of the following compounds towards HCN addition is:
| (i) |  |
| (ii) |  |
| (iii) |  |
| (iv) |  |
Aldehydes and ketones react with hydroxylamine to form ______.
Write the structure of the product formed when acetone reacts with 2, 4 DNP reagent.
Draw structure of the following derivative.
The ethylene ketal of hexan-3-one
Give an example of the reaction in the following case.
Oxime
Give an example of the reaction in the following case.
Imine
