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Aldehydes, Ketones and Carboxylic Acids
Preparation of Aldehydes – Etard Reaction
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Concepts tested
- intermediate in the Etard reaction
All Questions
2021 1 question
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The intermediate compound 'X' in the following chemical reaction is:
Etard reaction: toluene is oxidised by chromyl chloride in $CS_2$ to form a chromium complex, which on hydrolysis gives benzaldehyde. $C_6H_5CH_3 + CrO_2Cl_2 \xrightarrow{CS_2} C_6H_5CH(OCrOHCl_2)_2 \xrightarrow{H_3O^+} C_6H_5CHO$ So X is $C_6H_5CH(OCrOHCl_2)_2$.