Propanal and pentan-3-one are the ozonolysis products of an alkene? What is the structural formula of the alkene?
Solution 1
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:
Solution 2
i) Write the structures of propanal and pentan-3-ene with their oxygen atoms facing each other, we have,
ii)Remove oxygen atoms and join the two fragments by a double bond, the structure of the alkene is
