NEET2004ChemistryHydrocarbonsActual
Assertion : 2-bromobutane on reaction with sodium ethoxide in ethanol gives 1-butene as a major product. Reason : 1-butene is more stable than 2-butene.
Options
- AIf both assertion and reason are true and reason is the correct explanation of assertion
- BIf both assertion and reason are true but reason is not the correct explanation of assertion
- CIf assertion is true but reason is false
- DIf both assertion and reason are false.
Correct answer
D. If both assertion and reason are false.
Step-by-step solution
2-bromobutane on reaction with sodium ethoxide in ethanol gives 2-butene as a major product. This is according to Saytzeff's rule i.e. the predominant product is the most substituted alkene. 2-butene is more stable than 1-butene due to presence of large number of hyperconjugating structures in 2-butene.