Oxidation of toluene to benzaldehyde can be e | vedclass

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Question

(B) The oxidation of toluene to benzaldehyde is known as the Etard reaction. In this reaction,toluene is treated with chromyl chloride $(CrO_2Cl_2)$ o

Vedclass · Accepted Answer

$CrO_3$ / acetic anhydride,$H_3O^+$

Vedclass · Answer

(B) The oxidation of toluene to benzaldehyde is known as the Etard reaction. In this reaction,toluene is treated with chromyl chloride $(CrO_2Cl_2)$ or,as shown in the options,with $CrO_3$ in the presence of acetic anhydride. The $CrO_3$ with acetic anhydride forms a gem-diacetate intermediate,which upon subsequent hydrolysis with $H_3O^+$ yields benzaldehyde. The reaction sequence is: $C_6H_5CH_3$ $\xrightarrow{CrO_3 / 	ext{acetic anhydride}} C_6H_5CH(OCOCH_3)_2$ $\xrightarrow{H_3O^+} C_6H_5CHO + 2CH_3COOH$ Therefore,the correct reagent is $CrO_3$ / acetic anhydride followed by $H_3O^+$.

Oxidation of toluene to benzaldehyde can be easily carried out with which of the following reagents?

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