19950-87-9

Upstream product

• 79759-17-4 [4-Chloro-2-(4-chloro-phenylamino)-phenyl]-carbamic acid ethyl ester 
• 124-38-9 carbon dioxide 
• 1609560-04-4 C₃₀H₂₃Cl₂N₂P 
• 947590-18-3 5-chloro-N-(4-chlorophenyl)-2-nitrosoaniline 
• 100-00-5 4-chlorobenzonitrile 
• 106-47-8 4-chloro-aniline 
• 99503-78-3 o-semidine 
• 1219-99-4 N,N'-bis(4-chlorophenyl)urea 

Downstream Products

• 79759-66-3 5-chloro-3-(4-chlorophenyl)-1-methyl-1H-benzo[d]imidazol-2(3H)-one 

Relevant academic research and scientific papers

Aryliminophosphoranes as Key Intermediates in the One-Pot Synthesis of 1-Aryl-1,3-dihydro-2H-benzimidazol-2-ones from N-Aryl-2-nitrosoanilines and Carbon Dioxide under Mild Metal-Free Conditions

A new and convenient protocol is presented for the synthesis of 1-arylbenzimidazol-2-ones by a one-pot reaction of N-aryl-2-nitrosoanilines using solid carbon dioxide as a source of the key carbonyl moiety. The metal-free process is carried out under mild conditions and is compatible with a variety of substituents. The atom economy of the synthesis of the starting nitrosoanilines, accomplished by substitution of hydrogen, makes the entire synthesis of the target compounds environmentally friendly.

Process for preparing 1-aryl-2-benzimidazolinones

Process for preparing 1-aryl-2-benzimidazolinones by reacting a carbanilide and a hypohalite ion in a liquid, biphasic mixture in the presence of a quaternary ammonium and/or phosphonium salt.