R-CN xrightarrow[(ii) H_3O^{+}]{(i) SnCl_2 + | vedclass

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(C) The reaction of nitriles $(R-CN)$ with stannous chloride $(SnCl_2)$ in the presence of hydrochloric acid $(HCl)$,followed by hydrolysis $(H_3O^+)$

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Stephen

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(C) The reaction of nitriles $(R-CN)$ with stannous chloride $(SnCl_2)$ in the presence of hydrochloric acid $(HCl)$,followed by hydrolysis $(H_3O^+)$,yields an aldehyde $(R-CHO)$. This specific reduction method is known as the Stephen's reaction.The mechanism involves the formation of an imine hydrochloride intermediate,which is subsequently hydrolyzed to the corresponding aldehyde:$R-C \equiv N + SnCl_2 + 2HCl \rightarrow R-CH=NH \cdot HCl$$R-CH=NH \cdot HCl + H_2O \rightarrow R-CHO + NH_4Cl$

$A$. $C_6H_5COCl + H_2 \xrightarrow{Pd-BaSO_4} C_6H_5CHO$	$I$. Gattermann-Koch reaction
$B$. $CH_3CN + SnCl_2 + HCl \rightarrow CH_3CHO$	$II$. Etard reaction
$C$. $C_6H_5CH_3 + CrO_2Cl_2 \rightarrow C_6H_5CHO$	$III$. Stephen reaction
$D$. $C_6H_6 + CO + HCl \xrightarrow{AlCl_3} C_6H_5CHO$	$IV$. Rosenmund reaction

$R-CN \xrightarrow[(ii) H_3O^{+}]{(i) SnCl_2 + HCl} R-CHO$
What is the name of the above reaction?

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$R-CN \xrightarrow[(ii) H_3O^{+}]{(i) SnCl_2 + HCl} R-CHO$What is the name of the above reaction?