Benzonitrile (C_6H_5CN) reacts with a Grignar | vedclass

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

Question

(D) $1$. The reaction of benzonitrile $(C_6H_5CN)$ with a Grignard reagent $(RMgX)$ followed by acid hydrolysis yields a ketone.$2$. The reaction proc

Vedclass · Accepted Answer

$C_6H_5MgBr$

Vedclass · Answer

(D) $1$. The reaction of benzonitrile $(C_6H_5CN)$ with a Grignard reagent $(RMgX)$ followed by acid hydrolysis yields a ketone.$2$. The reaction proceeds as follows: $C_6H_5CN + C_6H_5MgBr \rightarrow C_6H_5C(NMgBr)C_6H_5$.$3$. Upon hydrolysis: $C_6H_5C(NMgBr)C_6H_5 + 2H_2O \rightarrow C_6H_5COC_6H_5 + NH_3 + Mg(OH)Br$.$4$. Since the product is benzophenone $(C_6H_5COC_6H_5)$, the Grignard reagent must be phenylmagnesium bromide $(C_6H_5MgBr)$.

Benzonitrile $(C_6H_5CN)$ reacts with a Grignard reagent in dry ether followed by hydrolysis to form benzophenone $(C_6H_5COC_6H_5)$ along with ammonia $(NH_3)$ and hydroxymagnesium bromide $(Mg(OH)Br)$. Identify the reagent used in the above transformation.

Similar Questions

In which of the following reactions is benzaldehyde formed from benzoyl chloride and hydrogen in the presence of $Pd-BaSO_4$?

What is the product formed when side chain chlorination of toluene is carried out followed by acid hydrolysis at $373 \ K$?

Which of the following reactions is best for the preparation of an aldehyde from a primary alcohol?

Give the chemical reactions for the following conversions:
$(1)$ Acetone from propene
$(2)$ Ethanal from $2-$bromobutane

Identify the reagent '$R$' used in the following reaction: $C_6H_5COCl \xrightarrow{R} C_6H_5CHO + HCl$

Vedclass Test Series

Exam Paper Generator

Online Exam Module