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प्रश्न
What are ambident nucleophiles? Explain with an example.
What do you mean by ambident nucleophiles? Explain with an example.
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उत्तर
Ambident nucleophiles attack alkyl halides through two distinct atoms. This occurs due to the presence of two nucleophilic centres resulting from resonance structures in the ion. For example, the lone pair of electrons on N in the NO2 ion makes it nucleophilic, while oxygen’s negative charge works as a nucleophile.
Thus, NO2 can attack the O or N atoms, making it ambidentate.
\[\ce{RX + Ag - O - N = O -> \underset{Nitroalkane}{R - NO2}}\]
\[\ce{RX + KNO2 -> \underset{Alkyl nitrate}{R - O - N = O}}\]
संबंधित प्रश्न
Write the structure of an isomer of compound C4H9Br which is most reactive towards SN1 reaction
Write the major products(s) in the following:
Write the main products when methyl chloride is treated with AgCN.
Give reasons for the following:
(CH3)3C–O–CH3 on reaction with HI gives (CH3)3C–I and CH3–OH as the main products and not (CH3)3C–OH and CH3–I.
What happens when chlorobenzene is subjected to hydrolysis?
What happens when ethyl chloride is treated with aqueous KOH?
Answer the following question.
Write one stereochemical difference between SN1 and SN2 reactions.
Which of the following is a primary halide?
Most reactive halide towards SN1 reaction is ____________.
The increasing order of nucleophilicity would be:
The reaction of C6H5–CH=CH–CH3 with HBr produces:
Which of the following statements are correct about the kinetics of this reaction?
(i) The rate of reaction depends on the concentration of only (b).
(ii) The rate of reaction depends on concentration of both (a) and (b).
(iii) Molecularity of reaction is one.
(iv) Molecularity of reaction is two.
Cyanide ion acts as an ambident nucleophile. From which end it acts as a stronger nucleophile in aqueous medium? Give reason for your answer.
Why are aryl halides less reactive towards nucleophilic substitution reactions than alkyl halides?
When CH3CH2CHCl2 is treated NaNH2 product formed is:-
Inversion of configuration occurs in ______.
An organic compound A with the molecular formula (+) C4H9Br undergoes hydrolysis to form (+) C4H9OH. Give the structure of A and write the mechanism of the reaction.
Discuss the mechanism of alkaline hydrolysis of methyl bromide.
The correct order of increasing reactivity of
C-X bond towards nucleophile in the following compounds is:
Assertion (A): 
undergoes SN2 reactions faster than 
.
Reason (R): Iodine is a better leaving group because of its large size.
In the light of the above statements, choose the correct answer from the options given below:
