JEE Main 2014ChemistryAlcohols Phenols and EthersMediumMCQ

JEE Main 2014Alcohols Phenols and Ethers Question with Solution

JEE Main 2014 (09 Apr Online)

Question

In the hydroboration - oxidation reaction of propene with diborane, H2O2 and NaOH, the organic compound formed is:

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Show full solutionCorrect option: A
Correct answer
ACH3CH2CH2OH

Step-by-step explanation

According to the question, The hydroboration oxidation reaction is an organic chemical reaction which is employed for the conversion of alkenes into alcohols that are neutral. This is done via a two-step process which includes a hydroboration step and an oxidation step.

 Hydroboration oxidation reaction is a two-step reaction in which alkene reacts with BH3, THF (tetrahydrofuran) and hydrogen peroxide in a basic medium to give alcohol. This is done by a net addition (across the entire double bond) of water.

Hydroboration oxidation reaction mechanism can be considered as an anti-markovnikov reaction where a hydroxyl group attaches itself to the carbon which is less substituted.

So, according to this reaction, propene give n-propyl-alcohol. 

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About this question

This is a previous-year question from JEE Main 2014, covering the Alcohols Phenols and Ethers chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.