25983-13-5, 6,7-Dichloroquinoxaline-2,3(1H,4H)-dione is a quinoxaline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated
This product was used in the next reaction without further purification. 5-Nitro-6,7-dichloro-1,4-dihydroquinoxaline-2,3-dione: 3.335 g (14.5 mmol) of 6,7-dichloro-1,4-dihydroquinoxaline-2,3-dione was dissolved in 65 mL of conc. H2 SO4 with stirring and cooling in an ice-H2 O bath, then 2.20 g (21.76 mmol) of KNO3 (Baker, used as received) was added in portions over 10 min. with stirring. The resulting mixture was stirred at 22 C. under N2 for 20 h. then was slowly poured into ice-H2 O (400 mL) with stirring. The precipitate was collected on a sintered funnel by vacuum filtration, washed with H2 O (5*10 mL), and dried at 60 C. under 0.1 mmHg for 12 h affording 3.39 g (85%) of the crude 6,7-dichloro-5-nitro-1,4-dihydroquinoxaline-2,3-dione as a grey-yellow powder. Purity: >98.5% based on HPLC analysis.
25983-13-5 6,7-Dichloroquinoxaline-2,3(1H,4H)-dione 1845, aquinoxaline compound, is more and more widely used in various.
Reference£º
Patent; The State of Oregon, acting by and through The Oregon State Board of Higher Education, acting for and on behalf of The Oregon Health Sciences University; The University of Oregon; The Regents of the University of California; US5514680; (1996); A;,
Quinoxaline – Wikipedia
Quinoxaline | C8H6N2 | ChemSpider