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Karnataka Board PUCPUC Science 2nd PUC Class 12

Predict all the alkenes that would be formed by dehydrohalogenation of the following halide with sodium ethoxide in ethanol and identify the major alkene: 1-Bromo-1-methylcyclohexane

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Question

Predict all the alkenes that would be formed by dehydrohalogenation of the following halide with sodium ethoxide in ethanol and identify the major alkene:

1-Bromo-1-methylcyclohexane

Very Short Answer
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Solution

When 1-bromo-1-methylcyclohexane undergoes dehydrohalogenation (β-elimination reaction) in the presence of sodium ethoxide in ethanol (C2H5ONa/C2H5OH), two alkenes are formed.
  1. 1-Methylcyclohexene (Major product)
  2. Methylidenecyclohexane (Minor product)

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Chapter 6: Haloalkanes and Haloarenes - Exercises [Page 190]

APPEARS IN

NCERT Chemistry Part 1 and 2 [English] Class 12
Chapter 6 Haloalkanes and Haloarenes
Exercises | Q 6.10 (i) | Page 190
Nootan Chemistry [English] Class 12 ISC
Chapter 6 Haloalkanes and Haloarenes
SHORT ANSWER TYPE QUESTIONS | Q 45. (a) | Page 612

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