Benzaldeyde can be prepared by oxidation of toluene by

Options

A. Acidic `KMnO_4`
B. `K_2Cr_2O_7 // H^(+)`
C. `CrO_2Cl_2`
D. All of these

Answer

C

Explanation

This is Etard’s reaction. Acidic `KMnO_4` and `K_2Cr_2O_7` oxidise toluene to benzoic acid but `CrO_2Cl_2` oxidises it to Benzaldehyde.