Q.

When 2-methyl 2-bromo butane is treated with sodium ethoxide in ethanol, what will be the major product ?

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a

2-methyl but-2-ene

b

3-methyl but-1-ene

c

2-methyl-sodium-butoxide

d

2-methyl but-1-ene

answer is A.

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Detailed Solution

Sodium ethoxide is a base which gives elimination (E2) by zeitsev rule(more substituted alkene) . 

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When 2-methyl 2-bromo butane is treated with sodium ethoxide in ethanol, what will be the major product ?