21639-43-0

Basic information

• Product Name: 4-chloro-2-phenylazo-aniline
• Synonyms: 4-chloro-2-phenylazo-aniline
• CAS NO: 21639-43-0
• Molecular Weight: 231.685
• Mol File: 21639-43-0.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 4-chloro-2-phenylazo-aniline(CAS DataBase Reference)
• NIST Chemistry Reference: 4-chloro-2-phenylazo-aniline(21639-43-0)
• EPA Substance Registry System: 4-chloro-2-phenylazo-aniline(21639-43-0)

Safety Data

• Hazardous Substances Data: 21639-43-0(Hazardous Substances Data)

Upstream product

• 95-83-0 4-Chloro-1,2-phenylenediamine 
• 586-96-9 Nitrosobenzene 
• 62-53-3 aniline 
• 51223-59-7 N-(2-amino-4-chlorophenyl)acetamide 
• 881-51-6 N-(4-chloro-2-nitrophenyl)-acetamide 
• 21639-42-9 acetic acid-(4-chloro-2-phenylazo-anilide) 

Relevant articles and documents

Palladium-catalyzed annulation of 2-(aryldiazenyl) aniline with dimethyl sulfoxide to access N-aryl-1H-benzo[d]imidazol-1-amine

A palladium-catalyzed annulation of 2-(aryldiazenyl) aniline and dimethyl sulfoxide was developed to access N-aryl-1H-benzo[d]imidazol-1-amine in moderate to good yields. Activated by 1,4-diazabicyclo[2.2.2]octane bis(sulfur dioxide) adduct (DABSO), DMSO served as a “[dbnd]CH[sbnd]” fragment during this procedure. It represents a facile pathway leading to benzimidazoles.