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प्रश्न
Give reason for the following:
The product formed during SN1 reaction is a racemic mixture.
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उत्तर
During the SN1 mechanism, intermediate carbocation formed is sp2 hybridized and planar in nature. This allows the attack of nucleophiles from either side of the plane resulting in a racemic mixture.
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संबंधित प्रश्न
Write the structure of the major product in each of the following reaction :
Write the structure of the major organic product in the following reaction:
\[\ce{CH3CH2CH2OH + SOCl2 ->}\]
SN1 reactions are accompanied by racemization in optically active alkyl halides.
In the reaction, \[\ce{R - X + NaOR' -> ROR’ + X}\] ( – ve ion). The main product formed is:
Most reactive halide towards SN1 reaction is ____________.
The order of reactivities of the following alkyl halides for an SN2 reaction is:
2-Bromopentane is heated with potassium ethoxide in ethanol. The major product obtained is ____________.
Inversion of configuration occurs in ______.
Which alkyl halide from the following pair would you expect to react more rapidly by an SN2 mechanism? Explain your answer.
\[\begin{array}{cc}
\ce{CH3CHCH2CH2Br}\\
|\phantom{.............}\\
\ce{CH3}\phantom{..........}\\
\end{array}\] or \[\begin{array}{cc}
\ce{CH3CH2CHCH2Br}\\
|\\
\phantom{...}\ce{CH3}\\
\end{array}\]
Consider the reactions,
(i) \[\begin{array}{cc}
\phantom{}\ce{\underset{}{(CH3)2CH - CH2Br} ->[C2H5OH] \underset{}{(CH3)2CH - CH2OC2H5 + HBr}}\\
\end{array}\]
(ii) \[\begin{array}{cc}
\phantom{}\ce{\underset{}{(CH3)2CH - CH2Br} ->[C2H5O-] \underset{}{(CH3)2CH - CH2OC2H5 + Br-}}\\
\end{array}\]
The mechanisms of reactions (i) and (ii) are respectively:
