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प्रश्न
How are the following compounds prepared?
benzaldehyde from benzoyl chloride
उत्तर
Benzaldehyde from benzoyl chloride
Rosenmund Reduction
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संबंधित प्रश्न
How are the following compounds prepared?
benzaldehyde from benzene
Arrange the following in the increasing order of their reactivity towards nucleophilic addition reaction:
C6H5COCH3, CH3-CHO, CH3COCH3
Draw the structure of the semicarbazone of ethanal.
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.
Benzaldehyde, p-Tolualdehyde, p-Nitrobenzaldehyde, Acetophenone.
Hint: Consider steric effect and electronic effect.
Predict the product of the following reaction:
\[\begin{array}{cc}
\phantom{..............}\ce{O}\\
\phantom{..............}||\\
\ce{R - CH = CH - CHO + NH2 - C - NH - NH2 ->[H+]}\end{array}\]
What is meant by the following term? Give an example of the reaction in the following case.
Acetal
What is meant by the following term? Give an example of the reaction in the following case.
Schiff’s base
Predict the products formed when cyclohexanecarbaldehyde reacts with the following reagents.
Excess ethanol and acid
How will you bring about the following conversion in not more than two steps?
Bromobenzene to 1-Phenylethanol
Write balanced chemical equations for action of ammonia on - acetone
How will you convert sodium acetate to methane?
Acetone, Acetaldehyde, Benzaldehyde, Acetophenone – reactivity towards addition of HCN.
Carboxylic acids contain carbonyl group but do not show the nucleophilic addition reaction like aldehydes or ketones. Why?
Identify the compounds A, B and C in the following reaction.
\[\ce{CH3 - Br ->[Mg/ether] (A) ->[(i) CO][(ii) Water] (B) ->[CH3OH/H+][Δ] (C)}\]
The pH of blood does not appreciably change by a small addition of acid or base because
Which of the following has the most acidic hydrogen?
A Idol condensation will not be observed in
Arrange the following in the increasing order of their property indicated:
Ethanal, Propanone, Propanal, Butanone (reactivity towards nucleophilic addition)
Which of the following is most reactive in nucleophilic addition reactions?
Draw the structure of the following derivative.
The ethylene ketal of hexane-3-one
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 the structure of the following derivative.
Acetaldehydedimethylacetal
Draw the structure of the following derivative.
The ethylene ketal of hexan-3-one
Draw structure of the following derivative:
Acetaldehydedimethylacetal
Draw structure of the following derivative.
The ethylene ketal of hexan-3-one
