13752-21-1

Usage

Physical appearance

White to light yellow crystalline powder.

Solubility

Insoluble in water; soluble in polar organic solvents.

Primary use

Production of polybenzimidazoles (high-performance materials with excellent thermal stability, flame resistance, and chemical resistance).

Other applications

Crosslinking agent in rubber and plastic industries; corrosion inhibitor in metalworking fluids; intermediate in the synthesis of pharmaceuticals, dyes, and pigments.

Safety precautions

May cause irritation to skin, eyes, and respiratory system upon exposure; handle with caution.

Upstream product

• 3617-11-6 1,4-bis<2-(4,5-dihydro-1H-imidazol-2-yl)>benzene 

Relevant academic research and scientific papers

A convenient procedure for preparing hetarylamides and their analogs by dehydrogenation of the corresponding imidazoles

Conditions of aromatization of 2-(2-hetaryl)imidazolines and their analogs with various dehydrogenating agents were examined. A new catalytic system, Pd/C-diphenyl oxide, was studied, and the optimal catalyst:imidazoline ratio ensuring formation of 2-substituted imidazoles in high yield was found.

Mild, efficient, and chemoselective dehydrogenation of 2-imidazolines, bis-imidazolines, and N-substituted-2-imidazolines with potassium permanganate supported on montmorillonite K-10

Different types of 2-imidazolines, bis-imidazolines, and N-substituted-2-imidazolines are efficiently oxidized to their corresponding imidazoles with potassium permanganate (KMnO4) supported on montmorillonite K-10 under very mild conditions. The procedure is very simple and no strict conditions were required. Selective dehydrogenation of 2-alkyl-2-imidazolines in the presence of 2-aryl-2-imidazolines is a noteworthy advantage of this method and can be considered as a useful practical achievement in these reactions.