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Class 11
Chemistry :-NCERT Solution - Hydrocarbons

Question 7
Propanal and pentan-3-one are the ozonolysis products of an alkene? What is the structural formula of the alkene?


Answer:

Answer

As per the given information, propanal and pentan-3-one are the ozonolysis products of an alkene. Let the given alkene be 'A'. Writing the reverse of the ozonolysis reaction, we get:



The products are obtained on the cleavage of ozonide 'X'. Hence, 'X' contains both products in the cyclic form. The possible structure of ozonide can be represented as:

Now, 'X' is an addition product of alkene 'A' with ozone. Therefore, the possible structure of alkene 'A' is:




SET

NCERT Chemistry Class 11