Trifluoroacetic acid → HCID 178517227, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 0,3 g (1,35 mmol) 5,6-diamino-7-chloro-2,3-dihydroxyquinoxaline and 8 ml trifluoroacetic acid was refluxed for 3 h. After cooling to 0° C., the precipitated product was filtered off and washed with ice-cooled trifluoroacetic acid and ether to give 0,28 g (68%) 4-chloro-7,8-dihydroxy-2-trifluoromethyl-1H-imidazo(4,5-f)quinoxaline, m.p.>300° C. NMR (DMSO-d6) 7.10 (1H,s).

Provenance & Evidence