The oxidation of toluene to benzaldehyde by chromyl chloride is called\

Question

Professor PC Thomas Classes · Answer

(a) : The oxidation of toluene $\left(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{3}ight)$ with chromyl chloride $\left(\mathrm{CrO}_{2} \mathrm{Cl}_{2}ight)$ in $\mathrm{CCl}_{4}$ or $\mathrm{CS}_{2}$ to give benzaldehyde is called Etard reaction. In this reaction, the chromyl chloride first forms a brown complex, which is separated and then decomposed with $\mathrm{H}_{2} \mathrm{O}$ to give benzaldehyde $\left(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CHO}ight)$.\