76060-06-5

Upstream product

• 76060-03-2 1-isopropyl-2-(2-nitrophenyl)-2,3-dihydrobenzimidazole 
• 88-73-3 2-Chloronitrobenzene 
• 70918-95-5 N-(2-propyl)-1,2-phenylenediamine 
• 25186-42-9 N-isopropyl-2-nitroaniline 

Downstream Products

• 60418-18-0 2-(2-azidophenyl)-1-isopropylbenzimidazole 
• 60418-26-0 2-(2-aminophenyl)-1-isopropylbenzimidazole 

Relevant academic research and scientific papers

Competitive Cyclisations of Singlet and Triplet Nitrenes. Part 9. 2-(2-Nitrophenyl)-benzothiazoles and -benzimidazoles

2-(2-Nitrophenyl)benzothiazole, produced by deoxygenation of the corresponding nitro-compound or by thermolysis or photolysis of the related azide, gives indazolobenzothiazole by attack on the benzothiazole nitrogen.Similar attack of the nitrene in 2-(2-nitrophenyl)benzimidazoles gives benzimidazoindazoles in good yield.However, with an appropriate 1-substituent in the benzimidazole (e.g.Me or CHMe2) the nitrene in its triplet state (generated by acetophenone-sensitised photolysis or by thermolysis of the azide bearing a 4-dimethylamino-group) preferentially attacks this substituent giving benzimidazoquinazolines.