Question

Select the correct Baeyer-Villiger oxidation reaction :

• A.
• B.
• C.
• D.

Answer 1

Answer: (A), (B)

In Baeyer-Villiger oxidation, the aldehyde is oxidised to carboxylic acid and the ketone is oxidised to ester group.
In this reaction, the oxygen from peroxy acid is getting inserted between the carbonyl group and H of an aldehyde and
the 'R' of ketone.
If it is a unsymmetrical ketone, then, ‘O’ insertion occurs between the carbonyl group and the R group which have higher migratory aptitude.
The order of migratory aptitude in Baeyer villiger oxidation is
$H>3^o>2^o>Ph>1^o>C{H}_3$

a.
b. The migrating power of $M{e}_{3}C>Ph,$ so the product is correct.

c. The product is wrong because here the $\left(Ph\right)$ group has migrated but the migrating power of $Ph<M{e}_{3}C$.

d. The migratory power of $H>Ph$ so the product is wrong.
Hence, the answers are (a) and (b).