Acetylacetone → HCID 178426329, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 0,5 g (2,24 mmol) 5,6-diamino-7-chloro-2,3-dihydroxyquinoxaline and 1,0 g (10 mmol) 2,4-pentanedione in 15 ml glacial acetic acid was stirred at 25° C. for 20 h. The precipitate was filtered off and washed with ethanol and ether to give 0,43 g (67%) 2,3-dihydroxy-8,10-dimethyl-7H-pyrazino(2,3-g)(1,5)benzodiazepine, m.p.>300° C. NMR (DMSO-D6): 7.07 (2H,s), 2.33 (3H,s), 2.27(3H,s).

Provenance & Evidence