The product (B) of the following reaction is: | vedclass

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

Question

(B) The given reaction is a variation of the Gattermann-Koch reaction or a form of Friedel-Crafts formylation using formyl chloride equivalent $(HN=CH

Vedclass · Accepted Answer

$4-$methylbenzaldehyde

Vedclass · Answer

(B) The given reaction is a variation of the Gattermann-Koch reaction or a form of Friedel-Crafts formylation using formyl chloride equivalent $(HN=CH-Cl)$.$1$. The reagent $HN=CH-Cl$ in the presence of $AlCl_3$ generates an electrophilic species $HN=CH^+$.$2$. This electrophile attacks the toluene ring. Since the methyl group $(-CH_3)$ is an ortho/para-directing group and para-position is sterically less hindered,the electrophile attacks the para-position to form an imine intermediate $(A)$.$3$. Subsequent hydrolysis of the imine intermediate $(A)$ with $H_3O^+$ yields the corresponding aldehyde,which is $4$-methylbenzaldehyde (p-tolualdehyde).

The product $(B)$ of the following reaction is:

Similar Questions

Enumerate different methods to prepare aldehyde compounds.

Collin's reagent is

Which reagent from the following is used for the preparation of aliphatic aldehyde from nitriles?

Identify compound $X$ in the following sequence of reactions:

Which of the following substances will give a ketone upon reaction with a Grignard reagent?

Vedclass Test Series

Exam Paper Generator

Online Exam Module