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Question
In the given sequence reaction which of the following is the correct structure of compounds A?
In the given sequence reaction which of the following is the correct structure of compounds A?
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Solution
The correct option is C
Ozonolysis of alkenes involves the addition of ozone molecule to an alkene to form ozonide. Cleavage of ozonide by Zn−H2O to smaller oxidised molecules.
H2/Ni gives catalytic hydrogenation of alkenes.
Calalytic hydrogenated product gives a cyclohexane ring so the compound (A) should have a six membered cyclic ring.
Also in ozonolysis product we have 2 moles of formaldehyde which indicated two terminal alkenes in the compound (A).
Option (b) does not have two terminal alkene so it is a wrong one.
Also option (d) has totally 11 carbon atom so it does not fits the given molecular formula of A so it can be eliminated.
Comparing (a) and (c)
When we done ozonolysis on compound (a), it gives 3 keto group and 1 aldehyde group.
When we done ozonolysis on compound (b), it gives 2 keto and 2 aldehyde group.
Thus, compound (c) is the correct reactant.
Ozonolysis of alkenes involves the addition of ozone molecule to an alkene to form ozonide. Cleavage of ozonide by Zn−H2O to smaller oxidised molecules.
H2/Ni gives catalytic hydrogenation of alkenes.
Calalytic hydrogenated product gives a cyclohexane ring so the compound (A) should have a six membered cyclic ring.
Also in ozonolysis product we have 2 moles of formaldehyde which indicated two terminal alkenes in the compound (A).
Option (b) does not have two terminal alkene so it is a wrong one.
Also option (d) has totally 11 carbon atom so it does not fits the given molecular formula of A so it can be eliminated.
Comparing (a) and (c)
When we done ozonolysis on compound (a), it gives 3 keto group and 1 aldehyde group.
When we done ozonolysis on compound (b), it gives 2 keto and 2 aldehyde group.
Thus, compound (c) is the correct reactant.
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