Question

Toluene on reaction with chromyl chloride in presence of ${\mathrm{CS}}_2$ followed by hydrolysis gives

Answer 1

Reaction of Toluene with Chromyl Chloride :

• Chromyl Chloride $\left({\mathrm{CrO}}_2{\mathrm{Cl}}_2\right)$ is an inorganic compound.
• Toluene being a cyclic organic compound has a chemical formula of ${\mathrm{C}}_7{\mathrm{H}}_8$.
• The structure of toluene is as shown,

• When toluene reacts with Chromyl Chloride in the presence of Carbon Disulfide $\left({\mathrm{CS}}_2\right)$, it forms a Brown Chromium complex which on hydrolysis gives Benzaldehyde $\left({\mathrm{C}}_7{\mathrm{H}}_6\mathrm{O}\right)$.

Formation of Benzaldehyde :

• The formation of Benzaldehyde is shown below.

• Benzaldehyde is also a cyclic hydrocarbon with an aldehyde group attached along with the benzene ring.