Assertion -In the following synthesis of 2-methyl pentane R -Cl-R-2CuLi- 2- methyl pentane Best yield would be obtained if RCl is 2-chloro propane- Reason- Reaction involves SN2 mechanism-

The correct option is D Assertion is wrong but Reason is correct. R #8722;Cl should be 1 chloro propane as it is a more reactive substrate for ...

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Standard XII

Chemistry

Wurtz Halide Reaction

Assertion :In...

Question

Assertion :In the following synthesis of 2-methyl pentane $R - C l + R_{2}^{'} C u L i \to 2 -$ methyl pentane Best yield would be obtained if $R C l$ is 2-chloro propane. Reason: Reaction involves $S_{N} 2$ mechanism.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is wrong but Reason is correct.

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Solution

The correct option is D Assertion is wrong but Reason is correct.
$R - C l$ should be $1 -$ chloro propane as it is a more reactive substrate for $S_{N} 2$ reaction. So the assertion is not correct but reason says it is a $S_{N} 2$ reaction which is true.

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Assertion :In the following synthesis of 2-methyl pentane R−Cl+R′2CuLi→2− methyl pentane Best yield would be obtained if RCl is 2-chloro propane. Reason: Reaction involves SN2 mechanism.

The correct option is D Assertion is wrong but Reason is correct.R−Cl should be 1−chloro propane as it is a more reactive substrate for SN2 reaction. So the assertion is not correct but reason says it is a SN2 reaction which is true.

Assertion :In the following synthesis of 2-methyl pentane $R - C l + R_{2}^{'} C u L i \to 2 -$ methyl pentane Best yield would be obtained if $R C l$ is 2-chloro propane. Reason: Reaction involves $S_{N} 2$ mechanism.

The correct option is D Assertion is wrong but Reason is correct.
$R - C l$ should be $1 -$ chloro propane as it is a more reactive substrate for $S_{N} 2$ reaction. So the assertion is not correct but reason says it is a $S_{N} 2$ reaction which is true.