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2-Bromo-6,7-dichloro-3-methylquinoxaline 1,4-dioxide

Dichloro-2-methyl-3-phenylsulfonylquinoxaline 1,4-dioxide (55, R = S02Ph) gave 2-bromo-6,7-dichloro-3-methylquinoxaline 1,4-dioxide (55, R = Br) (48% HBr, 80°C, 30 min then 20°C, 12 h 31%) 2-methyl-3-phenylsulfonylquinoxaline 1,4-dioxide gave 2-chloro-3-methylquinoxaline 1,4-dioxide (35% HCl, 70°C, 15 min 87% several analogs likewise). ... [Pg.144]

See also in sourсe #XX -- [ Pg.144 ]

See also in sourсe #XX -- [ Pg.144 ]

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2- -3-methylquinoxaline 1,4-dioxide

2- Bromo-3-methylquinoxaline 1,4-dioxide

2- Methylquinoxalines

2-bromo-10,10-dichloro

6.7- Dichloro-2- methylquinoxaline

6.7- Dichloro-2- methylquinoxaline 1,4-dioxide