The addition of hypo-chicrous acid to 1 butene gives:
Correct answer: D. None of the above
- A. 1-chloro 1-butanol
- B. 2-chloro 1-butanol
- C. Both (A) and (B)
- D. None of the above
Explanation
When hypochlorous acid (HClO) reacts with 1-butene, the main product formed is 1-chloro-1-butane. In this reaction, a chlorine atom replaces a hydrogen atom in the alkene. The first option mentions 1-chloro 1-butanol, which is incorrect because it suggests the presence of a hydroxyl (-OH) group that does not form in this reaction. The second option, 2-chloro 1-butanol, is also incorrect for the same reason; it implies the formation of a different structure that does not result from the reaction. The third option, stating both A and B, is invalid since neither product is correct. Therefore, the correct answer is 'None of the above,' as the actual product is 1-chloro-1-butane, which is not provided in the options.
This question appeared on the KMU Centralized Admission Test 2021 paper, which you can sit online with every answer explained.
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About Alkenes
Alkenes are unsaturated hydrocarbons containing a carbon-carbon double bond with sigma and pi components and restricted rotation. Their reactions include electrophilic addition of hydrogen, halogens, hydrogen halides and water, with Markovnikov orientation, oxidation, combustion and polymerisation, while their preparation commonly involves elimination from alkyl halides or alcohols.
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