Oxidation of toluene by acidic KMnO_(4) gives poor yield of benzoic acid while oxidation of p-nitrotoluene gives good yield of p-nitrobenzoic acid. Why?

Oxidation of toluene by acidic KMnO_(4) gives poor yield of benzoic ac

1.	Oxidation of toluene by acidic KMnO_(4) gives poor yield of benzoic acid while oxidation of p-nitrotoluene gives good yield of p-nitrobenzoic acid. Why?
Answer» Solution :Oxidant is an electrophile, it can attack and destroy the ring in acse of TOLUENE. But in p-nitrotoluene, the -`NO_(2)` GROUP deactivates the ELECTROPHILIC attack on benzene NUCLEUS and thus INCREASES yield of p-nitrobenzoic acid.