CBSE Class 12 Chemistry 2014 Delhi Set 1 Solved Paper

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Question : 26
Total: 30
(a) Write the mechanism of the following reaction:
CH3CH2OH
HBr
CH3
CH2
Br
+H2O

(b) Write the equation involved in Reimer-Tiemann reaction.
Solution:  
CH3CH2OH
HBr
CH3
CH2
Br
+H2O

The reaction follows SN2 mechanism. It is a single step mechanism which proceeds via the formation of transition state.
MECHANSIM:
The nucleophile attacks the electrophilic carbon on the backside, resulting in the inversion of configuration.
(b) The equation involved in the Reimer-Tieman reaction.
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