Question

Toluene on treatment with CrO₃ and (CH₃CO)₂O followed by hydrolysis with dil HCl gives
(a) benzaldehyde
(b) benzoic acid
(c) phenol
(d) phenylacetaldehyde

Answer 1

Toluene on treatment with CrO₃ and (CH₃CO)₂O followed by hydrolysis with dil HCl gives :

(a) benzaldehyde.

Answer 2

Toluene on treatment with $CrO_3$ and $(CH_3CO)_2 O$ followed by hydrolysis with dil HCl gives Benzaldehyde. (Option a).

• In this reaction $CrO_3$ is a catalyst which helps in the oxidisation of toluene.
• First $CrO_3$ and $(CH_3CO)_2 O$ turns toluene into $C_6H_5CH(OAC)_2$.
• Then hydrolysis of $(CH_3CO)_2 O$ gives rise to Benzaldehyde.
• The reaction is illustrated in the attached picture

#SPJ3