Question

Pyrrole reacts with excess para-(N,N-dimethylamino)benzaldehyde to form a highly colored compound. Draw the structure of the colored compound.

Short answer

The main component of an Ehrlich’s reagent is para-(N,N-dimethylamino) benzaldehyde. This reagent is used for identifying psychoactive compounds, and it reacts with the pyrrole to generate a colored compound.

Step-by-step solution

Ehrlich’s reagent  

The main component of an Ehrlich’s reagent is para-(N,N-dimethylamino) benzaldehyde. This reagent is used for identifying psychoactive compounds, and it reacts with the pyrrole to generate a colored compound.

Structure of the colored compound formed by the reaction of pyrrole with para-(N,N-dimethylamino)benzaldehyde

Pyrrole reacts with para-(N,N-dimethylamino) benzaldehyde to form a highly colored compound. The reaction mechanism is as shown below.

The structure of the colored compound is as shown below.

Structure of the colored compound