The product formed by acid catalysed hydration of 2 - phenyl propene is:
Correct answer: B. 2 - phenyl - 2 - propanol
- A. 3 - phenyl - 2 - propanol
- B. 2 - phenyl - 2 - propanol
- C. 1 - phenyl - 1 - propanol
- D. 1 - phenyl - 2- propanol
Explanation
The answer is B as we have the phenyl on the second carbon and the double bond being either between carbon number 1 and 2 or between carbon number 2 and 3. Based on the information about the position of the phenyl group, we can rule out options A, C, and D as all three show the phenyl having its position changed which is not possible. Hydration would remove the double bond, replacing it with a hydroxyl group that could be on either three of the carbons. As we only have option B satisfying our condition of the phenyl group being on the second carbon, we can infer the hydroxyl is on the second carbon as well based on the options provided.Also remember, the major product obtained on acid - catalysed hydration of 2-phenylpropene is 2-Phenylpropan-2-ol.
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About Alcohols and Phenols
Alcohols are classified as primary, secondary or tertiary and studied through their hydrogen bonding, acidity, oxidation and reactions with active metals, acids and halogenating agents. Phenols require separate treatment because the hydroxyl group is attached to an aromatic ring, making their acidity and electrophilic substitution different from ordinary alcohols.
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