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Question

Elimination reactions of the following compound with sodium ethoxide give two alkenes, A and B, but with different selectivities. Which of the following statements best indicates the most probable outcome?



A
A will be the major product
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B
B will be the major product
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C
A and B will be formed in equal quantities
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D
can't be predicted
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Solution

The correct option is B B will be the major product
The elimination reaction of a simple substrate with a normal base generally gives the most stable alkene which is more substituted, i.e. normal Saytzeff product, but sterically bulky substrate or the base leads to a terminal or less substituted alkene, i.e. Hofmann product. In the given question, simple substrate is present, so more substituted alkene will be formed which is B. Hence, the correct answer is option (b).

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