Question

нσℓα!!


Which of the following alkane cannot be made in good yield by wurtz reaction ?



A) n- Butane

B) n- Hexane

C) 2,3 -Dimethyl butane

D) n-Heptane



NEET 2020​

Answer 1

(D) n-Heptane

• Wurtz reaction is a reaction in which alkyl halide is converted to alkane by Na/ether.

• It is limited to the synthesis of symmetrical alkanes.

• n-heptane is the straight-chain alkane with the chemical formula H₃C(CH₂)₅CH₃ or C₇H₁₆.

• It is one of the main components of gasoline.

• When used as a test fuel component in anti-knock test engines, a 100% heptane fuel is the zero point of the octane rating scale.

• Two different alkyl halides can be used in Wurtz reaction.

• Wurtz reaction is a coupling reaction.

• The alkyl groups of  reactants get  doubled on coupling.  

Answer 2

Answer:

D)n-Heptane

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