(A) The given reaction is the $Stephen$ reaction. In this reaction,nitriles $(R-CN)$ are reduced to imines using stannous chloride $(SnCl_2)$ in the p

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(A) The given reaction is the $Stephen$ reaction. In this reaction,nitriles $(R-CN)$ are reduced to imines using stannous chloride $(SnCl_2)$ in the presence of hydrochloric acid $(HCl)$. The intermediate imine ($A$,which is $R-CH=NH \cdot HCl$) is then hydrolyzed with water $(H_3O^+)$ to yield the corresponding aldehyde $(RCHO)$.

Class 12 Chemistry 8-1.Aldehydes and Ketones Preparation

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$R-C \equiv N + SnCl_2 + HCl$ $\longrightarrow A$ $\xrightarrow{H_3O^+} RCHO$. The above reaction is known as:

A
Stephen reaction
B
Rosenmund reduction
C
Etard reaction
D
Mendius reaction

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8-1.Aldehydes and Ketones

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Preparation

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Identify the reaction shown in the image:
$C_6H_5CN \xrightarrow[(ii) H_3O^+]{(i) SnCl_2 + HCl} C_6H_5CHO$

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An organic compound $X$ gives a red precipitate on heating with Fehling's solution. Which one of the following reactions yields $X$ as a major product?

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$R-C \equiv N + SnCl_2 + HCl$ $\longrightarrow A$ $\xrightarrow{H_3O^+} RCHO$. The above reaction is known as:

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The reaction of benzene with $CO$ and $HCl$ in the presence of anhydrous $AlCl_3$ gives a compound $X$. $X$ can also be obtained from which of the following reactions?

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Identify the reaction shown in the image:
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