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

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

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

Vedclass · Accepted Answer

Stephen

Vedclass · Answer

(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$

Column $-I$ (Reactant)	Column $-II$ (Reaction Condition)	Column $-III$ (Product)
$A$. $CH_3CN + C_6H_5MgBr$	$i$. $Ether, H_3O^+$	$p$. Benzaldehyde
$B$. $Benzene + CH_3COCl$	$ii$. $Hg^{2+}, H_2SO_4, H_2O$	$q$. Acetophenone
$C$. $Toluene$	$iii$. $Anhydrous AlCl_3$	$r$. Propiophenone
$D$. $Phenyl ethyne$	$iv$. $x. Cl_2, hv$; $y. H_2O, 373 \ K$	$s$. Acetaldehyde

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

Similar Questions

The chemicals used for preparing acetophenone are:
$(A)$ $C_6H_6$
$(B)$ $CH_3COCH_3$
$(C)$ $CH_3COCl$
$(D)$ Anhydrous $AlCl_3$

Explain the method of preparation of aldehydes and ketones from Grignard reagents with suitable examples.

Calcium acetate,on heating,gives:

Identify the product $A$ in the following reaction:
$CH_3-CCl_2-CH_2-CH_3 + 2KOH_{(aq)} \xrightarrow{\Delta} A + 2KCl + H_2O$

Vedclass Test Series

Exam Paper Generator

Online Exam Module

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