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2-Acetyl-3-methylquinoxaline oxidation

Benzoxadiazole 1-oxide (473) gave 2-acetyl-3-methylquinoxaline 1,4-dioxide (472) (AC2CH2, NaOH, EtOH, 55°C, 90 min, then 20°C, 12 h 54% or AC2CH2 on Si02 gel, 20°C, 7 days 58%), 2-benzoyl-3-methylquinoxaline 1,4-dioxide (474) (BZCH2AC on 3A molecular sieve,... [Pg.63]

BzCH2C(=0)CH2Ph, neat EtjN, 20°C, 24 h 21%) ° 5,6-Difluoro-2,l,3-benzoxadiazole 1-oxide (476) gave 2-acetyl-6,7-difluoro-3-methylquinoxaline 1,4-dioxide (477) (AC2CH2, neat Et3N, 5°C, 1 h, then 20°C, 1 h 72% analogs likewise). ° = ... [Pg.64]

Benzoxadiazole 1-oxide (481) with 3-acetyltetrahydro-2-furanone (2-acetyl-butyrolactone 482) gave 2-(2-hydroxyethyl)-3-methylquinoxaline 1,4-diox-ide (483) (KOH, MeOH-HaO, 20°C, 24 h 50%) but with 2-acetylacetaldehyde dimethyl acetal (484), in the presence of morpholine as base, it gave 2-(2-morpholinovinyl)quinoxaline 1,4-dioxide (485) (PhH, reflux, water separation, 9 h 47%) ... [Pg.65]

Acetyl-3-methylquinoxaline 4-oxide (218, X = 0) gave 2-methyl-3-(l-tosyl-hydrazonoethyl)quinoxaline 1-oxide (218, X = NNHTs) (TSNHNH2, MeOH,... [Pg.298]

Acetyl-3-methylquinoxaline 1-oxide (206) gave 2-methylquinoxaline 4-oxide (207) [HN(CH2CH2)20, MeCN, reflux, 24 h 30%]. ... [Pg.354]

Acetoxymethyl-7-acetyl-2-quinoxalinecarboxamide 1-oxide 2-Acetoxymethyl-3-benzoylquinoxaline 4-oxide 2-Acetoxymethyl-5-methoxy-3-methylquinoxaline 2-Acetoxymethyl-5-methoxy-3-methylquinoxaline 1,4-dioxide 2-Acetoxymethyl-3-methylquinoxaline... [Pg.362]

Acetoxy-2,3 (1H, 4//)-quinoxalinedione 2-Acetoxyquinoxaline 1-oxide 2-Acetyl-3-bromomethylquinoxaline 1 -oxide 2-Acetyl-6,7-difluoro-3-methylquinoxaline 2-Acetyl-6,7-difluoro-3-methylquinoxaline... [Pg.363]

Acetyl-3-methylquinoxaline 1 -oxide 2-Acetyl-3-methylquinoxaline 4-oxide... [Pg.364]

Acetyl-2(17/)-quinoxalinone 3-Acetyl-2(17/)-quinoxalinone 4-oxide 2-Acetylthiomethyl-3-methylquinoxaline... [Pg.365]

Peracetic acid or monoperoxysulfuric acid oxidation of 2,4-dimethyl-l,5-benzodiazepine also gives 2-acetyl-3-methylquinoxaline in 28 and 12% yield, respectively. ... [Pg.216]

Peracetic acid oxidation of 2,4-dimethyl-1,5-benzodiazepine (4) gives some 2-acetyl-3-methylquinoxaline (5). The latter compound is also formed on treatment of the diazepine with a mixture of concentrated nitric and sulfuric acids, together with benzotriazole (6) and 4-nitro-N,N -diacetyl-o-phenylenediamine (7). ... [Pg.131]

See other pages where 2-Acetyl-3-methylquinoxaline oxidation is mentioned: [Pg.31]    [Pg.31]    [Pg.364]    [Pg.364]    [Pg.64]    [Pg.275]    [Pg.27]    [Pg.39]    [Pg.47]   
See also in sourсe #XX -- [ Pg.31 ]



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2- Methylquinoxalines

2-Acetyl-3-methylquinoxaline

2-Acetyl-3-methylquinoxaline 1-oxide

Acetyl oxide

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