Which of the following alkanes cannot be made | vedclass

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Question

(D) The Wurtz reaction is primarily used for the preparation of symmetrical alkanes containing an even number of carbon atoms.$n-$Butane $(C_4H_{10})$

Vedclass · Accepted Answer

$n-$Heptane

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(D) The Wurtz reaction is primarily used for the preparation of symmetrical alkanes containing an even number of carbon atoms.$n-$Butane $(C_4H_{10})$ is symmetrical and can be prepared from ethyl bromide $(C_2H_5Br)$.$n-$Hexane $(C_6H_{14})$ is symmetrical and can be prepared from propyl bromide $(C_3H_7Br)$.$2,3-$Dimethylbutane is symmetrical and can be prepared from isopropyl bromide $(CH_3CH(Br)CH_3)$.$n-$Heptane $(C_7H_{16})$ is an unsymmetrical alkane with an odd number of carbon atoms. Attempting to synthesize it via the Wurtz reaction would result in a mixture of products (e.g.,$n-$hexane,$n-$heptane,and $n-$octane) due to the coupling of different alkyl halides,leading to a poor yield.

Which of the following alkanes cannot be made in good yield by the Wurtz reaction?

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