JEE Main Chemistry question

(I) CH₃CH₂Br --LAH--> C₂H₆ and (II) (CH₃)₃CBr --LAH--> alkene. The reason for this is

(A)(I) SN2, (II) E1 mechanism
(B)(I) SN1, (II) E2 mechanism
(C)(I) SN1, (II) E1 mechanism
(D)(I) SN2, (II) E2 mechanismCorrect

Answer: (D)

Solution

LiAlH₄'s hydride can act as a nucleophile, directly displacing bromide from the unhindered primary carbon via SN2 to give ethane. At the sterically blocked

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Question ID VK-139343