Chemistry · Aldehyde and Ketones: Nature of carbonyl group, nucleophilic addition to >C=O group, relative reactivities of aldehydes and ketones
C r O_{2} C l_{2} / C C l_{4}}{(i i) H_{3} O^{+}} \) The above reaction is an ex
\( \boldsymbol{P h C H}_{2} \boldsymbol{C H}_{3} \frac{(i) C r O_{2} C l_{2} / C C l_{4}}{(i i) H_{3} O^{+}} \) \( \boldsymbol{P h C H}_{2} \boldsymbol{C H O} \) The above reaction is an example of which name reaction?
- A. Rossenmund reduction
- B. Birch reduction
- C. Mendius reduction
- D. Etard reduction
Step-by-step solution
The reaction uses CrO2Cl2 in CCl4 followed by aqueous workup to convert an alkylbenzene (ethylbenzene) to an aldehyde (phenylacetaldehyde). This is characteristic of the Etard reaction, which oxidizes benzylic methyl or methylene groups to aldehydes using chromyl chloride.
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