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प्रश्न
How are the following compounds prepared?
acetophenone from benzene
उत्तर
(b)Acetophenone from benzene
Friedal craft reaction
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संबंधित प्रश्न
How are the following compounds prepared?
benzaldehyde from benzene
Write the products formed when CH3CHO reacts with the following reagents : H2N – OH
Predict the product of the following reaction:
What is meant by the following term? Give an example of the reaction in the following case.
Hemiacetal
What is meant by the following term? Give an example of the reaction in the following case.
2, 4-DNP-derivative
Predict the products formed when cyclohexanecarbaldehyde reacts with the following reagents.
PhMgBr and then H3O+
Predict the products formed when cyclohexanecarbaldehyde reacts with the following reagents.
Semicarbazide and weak acid
How will you bring about the following conversion in not more than two steps?
Bromobenzene to 1-Phenylethanol
Give plausible explanation for the following:
There are two −NH2 groups in semicarbazide. However, only one is involved in the formation of semicarbazones.
Complete the synthesis by giving missing starting material, reagent or product.
Write balanced chemical equations for action of ammonia on - acetaldehyde
Write balanced chemical equations for action of ammonia on - acetone
What are amines?
Write the main product formed when propanal reacts with the following reagents:
H2N- NH2 followed by heating with KOH in ethylene glycol.
Which of the following compounds is most reactive towards nucleophilic addition reactions?
Which of the following is the correct representation for intermediate of nucleophilic addition reaction to the given carbonyl compound (A):
(i) 
(ii) 
(iii) 
(iv) 
Which one of the following gives only one monochloro derivative?
The increasing order of the following compounds towards HCN addition is:
| (i) |  |
| (ii) |  |
| (iii) |  |
| (iv) |  |
Out of p-tolualdehyde and p-nitrobenzaldehyde, which one is more reactive towards nucleophilic addition reactions, why?
Draw structure of the following derivative.
Acetaldehydedimethylacetal
Draw structures of the following derivative.
The ethylene ketal of hexan-3-one
The product of the following reaction is
\[\begin{array}{cc}
\ce{O}\phantom{.........}\\
||\phantom{.........}\\
\ce{C2H5 - C - CH3 ->[H2/Ni][\Delta] \phantom{..}?}\end{array}\]
Draw structure of the following derivative:
Acetaldehydedimethylacetal
Draw structure 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 given derivative.
The ethylene ketal of hexan-3-one
