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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
Which would undergo SN1 reaction faster in the following pair and why?
How do you convert the following:
Ethanol to propanenitrile
Write the structure of the major product in each of the following reaction :
Which compound in the following pair will react faster in SN2 reaction with OH−?
CH3Br or CH3I
Write the structure of the major organic product in the following reaction:
\[\ce{CH3CH2Br + KCN ->[aq.ethanol]}\]
Arrange the compounds of the following set in order of reactivity towards SN2 displacement:
1-Bromobutane, 1-Bromo-2, 2-dimethylpropane, 1-Bromo-2-methylbutane, 1-Bromo-3-methylbutane
What is the action of the following on ethyl bromide?
silver acetate
Which compound in the following pair reacts faster in SN2 reaction with OH–?
- CH3Br or CH3
- CH3Cl, (CH3)3CCl
Arrange the following organic compounds in descending order of their reactivity towards SN1 reaction.
C6H5CH2Br, C6H5CH(C6H5)Br, C6H5CH(CH3)Br, C6H5C(CH3)(C6H5)Br
The process of separation of a racemic modification into d and l-enantiomers is called ____________.
The correct order of increasing the reactivity of C–X bond towards nucleophile in following compounds.
(I)
(II)
(CH3)3CCl
(III)
(CH3)2CHCl
(IV)
The reaction of C6H5–CH=CH–CH3 with HBr produces:
Which of the statements are correct about above reaction?
(i) (a) and (e) both are nucleophiles.
(ii) In (c) carbon atom is sp3 hybridised.
(iii) In (c) carbon atom is sp2 hybridised.
(iv) (a) and (e) both are electrophiles.
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.
Which of the compounds will react faster in SN1 reaction with the –OH ion?
\[\ce{CH3-CH2-Cl}\] or \[\ce{C6H5-CH2-Cl}\]
Chlorination of alkanes is an example of
CCl4 is insoluble in water because:-
The major product formed in the following reaction is:
The number of chiral carbons present in the molecule given below is ______.
Give the mechanism of the following reaction:
\[\ce{CH3CH2OH ->[H2SO4][413 K] CH3CH2-O-CH2CH3 + H2O}\]
