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प्रश्न
The oxidation of toluene to benzaldehyde by chromyl chloride is called ______.
पर्याय
Etard reaction
Riemer-Tiemann reaction
Stephen’s reaction
Cannizzaro’s reaction
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उत्तर
The oxidation of toluene to benzaldehyde by chromyl chloride is called Etard reaction.
Explanation:
The oxidation of toluene (C6H5CH3) with chromyl chloride (CrO2Cl2) in CCl4 or CS2 to give benzaldehyde is called Etard reaction. In this reaction, the chromyl chloride first forms a brown complex. which is separated and then decomposed with H2O to give benzaldehyde (C6H5CHO).
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| Column I (Acids) |
Column II (IUPAC names) |
||
| (i) | Phthalic acid | (a) | Hexane-1,6-dioic acid |
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| (iv) | Adipic acid | (d) | Butane-1,4-dioic acid |
| (v) | Glutaric acid | (e) | Ethane-1,2-dioic acid |
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\[\ce{C3COCl ->[H2][Pd/BaSO4] CH3CHO + HCl}\]
\[\begin{array}{cc}
\ce{CH3 - CH2 - CH - CH3}\\
\phantom{.....}|\\
\phantom{......}\ce{Cl}
\end{array}\] obtained by chlorination of n-butane, will be
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