Complete the following reactions :

Explanation

(a)
`Li` is more electropositive than `Mg`. The `(overset(-delta) R - overset (-delta) Mg)` bond. `R` from `(R - Li)` has more negative charge than `R` from `(R - Mg)` and thus is a strong nucleophile and is capable of additing to the `(C=O)`bond of `COO^(Ө)`.
(b)
`(beta-`Keto acid undergoes easy decarboxylation via intramolecular `H-`bonding).
( c)
The result shows that the `overset ((**)) CO` has come from `overset ((**)) COOH`, not from `(C=O)`.
(d) .