Class 12th Chemistry 2017 Set3 Delhi Board Paper Solution

Question 25

Write the formula of reagents used in the following reactions:

(i) Bromination of phenol to 2, 4, 6-tribromophenol.

(ii) Hydroboration of propene and then oxidation to propanol.

Answer

(i) Bromine in presence of water can carry out bromination of phenol to 2, 4, 6-tribromophenol.

(ii) Diborane (BH3)2 reacts with propene to give tripropylboranes as addition product which on oxidation with alkaline H2O2  give alcohols. 

 

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