Piperazine → HCID 58125522, compound

Participants

Reaction Steps

By the same method as in the step f) of Example 22, (3,5-dibromo-4-methoxy-phenyl)-[7-(3-nitro-phenyl)-2,3-dihydro-pyrido[2,3-b][1,4]oxazin-1-yl]-methanone (101 mg, 0.18 mmol), lithium bromide (32 mg, 0.36 mmol), and piperazine (24 mg, 0.28 mmol) were dissolved in N,N-dimethyl formamide (3 ml), and reacted at 100□ to obtain the target compound 50, i.e., (3,5-dibromo-4-hydroxy-phenyl)-[7-(3-nitro-phenyl)-2,3-dihydro-pyrido[2,3-b][1,4]oxazin-1-yl]-methanone, as pale-brown solid (24 mg, 25%).

Provenance & Evidence