61289-34-7Relevant articles and documents
Selective colorimetric and ratiometric probe for Ni(ii) in quinoxaline matrix with the single crystal X-ray structure
Goswami, Shyamaprosad,Chakraborty, Shampa,Das, Avijit Kumar,Manna, Abhishek,Bhattacharyya, Aditya,Quah, Ching Kheng,Fun, Hoong-Kun
, p. 20922 - 20926 (2014)
A quinoxaline based colorimetric nickel sensor, HQAP [2-(quinoxalin-2- ylmethyleneamine)phenol] with high selectivity and sensitivity toward Ni 2+ ions is shown to have potential for practical use. The absorption maximum of HQAP shows a large ratiometric shift from 306 to 570 nm (ΔI = 264 nm) in the presence of Ni2+ ions, and the color changes from colorless to deep violet only upon addition of Ni2+ which is very easily observed by the naked eye (the detection limit of Ni2+ is as low as 4.16 μM in solution). The predicted binding mode (2 : 1) from spectral analysis and Job's plot was confirmed by the single crystal X-ray structure of the complex. This journal is the Partner Organisations 2014.
A new methodology of annelation of five- and seven-membered heterocycles to quinoxalines
Boguslavskiy,Ponizovskiy,Kodess,Charushin
, p. 2175 - 2184 (2007/10/03)
Pyrazolo[3,4-b]-, isoxazolo[4,5-b]-, benzo[2,3]-1,4-diazepino-, and benzo[2,3]-1-4-oxazepinoquinoxalines were prepared by reactions of 2-quinoxalinecarboxaldehyde with 1,2-N,N-, 1,2-N,O and 1,4-N,N- and 1,4-N,O-dinucleophiles.
