Facile cyclization of 2-arylethynyl aniline to 4(1H)-cinnolones: a new chemo...

 

 

Otrzymano od użytkownika BO za pośrednictwem Czytnika Google:

 

 

Facile cyclization of 2-arylethynyl aniline to 4(1H)-cinnolones: a new chemodosimeter for nitrite ions

przez ScienceDirect Publication: Tetrahedron Letters dnia 10-11-24

Publication year: 2010
Source: Tetrahedron Letters, In Press, Accepted Manuscript, Available online 24 November 2010
Raju, Dey , Tanmay, Chatterjee , Brindaban C., Ranu
2-Arylethynyl anilines undergo very fast reaction (5 min) with nitrite ions in aqueous acidic media to produce 4(1H)-cinnolones which exhibit yellow color and UV absorbance at 391nm. This reaction is irreversible and has been successfully tested for the detection of nitrite ions in water at ppm concentration. Thus, 2-phenylethynyl aniline serves as a chemodosimeter. An efficient and general method for the synthesis of 4(1H)-cinnolones has been developed based on this reaction.

 

 

Dostępne działania:

• Subskrybuj ScienceDirect Publication: Tetrahedron Letters za pomocą Czytnika Google
• Zacznij używać Czytnika Google, aby łatwiej śledzić swoje ulubione witryny