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प्रश्न
What is meant by the following term? Give an example of the reaction in the following case.
Oxime
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उत्तर
Oximes are formed by reaction between aldehydes or ketones and hydroxylamine. The reaction is carried out in a mildly acidic condition.
\[\begin{array}{cc}
\ce{H3C}\phantom{...........................}\ce{H3C}\phantom{.....................}\\
\backslash\phantom{..............................}\backslash\phantom{................}\\
\ce{= O + \underset{Hydroxylarnine}{H2N-OH} ->[pH 3.5] \phantom{......}= NOH + H2O}\\
/\phantom{..............................}/\phantom{.................}\\
\ce{H}\phantom{............................}\ce{\underset{Oxime}{H}}\phantom{..................}
\end{array}\]
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संबंधित प्रश्न
Acetaldehyde, when treated with which among the following reagents does NOT undergo addition reaction?
(A) Ammonia
(B) Hydroxylamine
(C) Ammoniacal silver nitrate
(D) Semicarbazide
How are the following compounds prepared?
benzaldehyde from benzene
Predict the products of the following reactions:
Write the products formed when CH3CHO reacts with the following reagents : HCN
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.
Ketal
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
What is the action of the following reagents on ethanoic acid?
1) `LiAlH_4"/"H_3O^+`
2) `PCl_3 , "heat"`
3) `P_2O_5, "heat"`
Write the structure of Phenylmethanamine.
Write the main product formed when propanal reacts with the following reagents:
2 moles of 3 CH OH in presence of dry HCl
Write the name of product formed, when acetone is treated with 2, 4-dinitrophenyl hydrazine.
Which of the following is most reactive in nucleophilic addition reactions?
Draw structures of the given derivatives.
The ethylene ketal of hexan-3-one
Draw structures of the given derivatives.
The ethylene ketal of hexan-3-one
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
Draw structure of the following derivative:
Acetaldehydedimethylacetal
Give an example of the reaction in the following case.
Oxime
