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3- Phenyl-2-quinoxalinecarboxamide

Dimethoxy-3-phenyl-2-quinoxalinecarboxamide (58) gave methyl 5,7-dimethoxy-3-phenyl-2-quinoxalinecarbixylate (59) (H2SO4, MeOH, 90°C,... [Pg.327]

Phenyl-2-quinoxalinecarbonitrile 1,4-dioxide 3-Phenyl-2-quinoxalinecarbonitrile 1-oxide 3-Phenyl-2-quinoxalinecarbonitrile 4-oxide (2 -H 3)-Phenyl-6-carboxamide (mixture) 3-Phenyl-2-quinoxalinecarboxamide 3-Phenyl-2-quinoxalinecarboxamide 1-oxide 3-Phenyl-2-quinoxalinecarboxamide 4-oxide 3-Phenyl-2-quinoxalinecarboxylic acid 3-Phenyl-6-quinoxalinecarboxylic acid 3-Phenyl-2-quinoxalinecarboxylic acid 1,4-dioxide... [Pg.429]

AcC(=0)C02Et (made in situ), TsOH, PhH, reflux, 2 h 74%]"" or A-methyl-3-p-nitrophenyl-A-phenyl-2-quinoxalinecarboxamide (161) [BzC(=0)-CONMePh, AcOH, reflux, 30 min 76%]. ... [Pg.25]

Benzenediamine (199) and C-(2-chloro-2-phenylacetyl)formamide (200) gave 3-phenyl-3,4-dihydro-2-quinoxalinecarboxamide (201), formulated as its 1,4-dihydro tautomer (EtOH, reflux, 6 h 56%) in contrast, the same substrate (199) with methyl C-(2-chloro-2-phenylacetyl)formate cyanohydrin (202) gave methyl 3-phenyl-2-quinoxalinecarboxylate (203), presumably by aerial oxidation of a dihydro precursor (MeCN, reflux, 12 h 7%). ... [Pg.29]

Benzenediamine (218) and the hydrochloride of ethyl 2-[A-cyclohexyl-(ethoxyformimidoyl)]glyoxalate [Et02CCOC(OEt)=N(CeHn)] (prepared in situ) gave A-cyclohexyl-3-oxo-3,4-dihydro-2-quinoxalinecarboxamide (222) (PhH-EtOH-CH2Cl, 40°C, 2 h 81% clearly needing an hydrolytic step). o-Anilinoaniline gave ethyl 3-oxo-4-phenyl-3,4-dihydro-2-quinoxalinecarboxy-... [Pg.32]

Benzenesulfonyloxy-1 //-pyrrolo[3,4-/>]quinoxaline-1,3(2F/)-dione (591) gave //-phenyl-3-(A( -phenylureido)-2-quinoxalinecarboxamide (592) (PI1NH2, PhH, 20°C, 6 h 82% the mechanism probably involved Lossen rearrangement at an intermediate stage but remains unprove) A(-p-tolyl-3-(A( -p-tolyl-ureido)-2-quinoxalinecarboxamide (87%) was made similarly using p-toluidine. ... [Pg.81]

Ethyl 3-oxo-4-phenyl-3,4-dihydro-2-qumoxalinecarboxylate (73, R = OEt) gave Af-methyl-3-oxo-4-phenyl-3,4-dihydro-2-quinoxalinecarboxamide (73, R =... [Pg.330]

Phenyl-l//-pyrazolo[3,4-h quinoxaline (579) gave 3-anilino-2-quinoxalinecar-boxamide (581) [NaBH4, Pr OH, reflux, 80 h 58% the proposed mechanism via the nitrile (580) is unconvincing, but the fact remains] 430 the analogous 3-p-chloroanilino-2-quinoxalinecarboxamide was made similarly in 30% yield.440... [Pg.80]

See other pages where 3- Phenyl-2-quinoxalinecarboxamide is mentioned: [Pg.393]    [Pg.395]    [Pg.31]    [Pg.65]    [Pg.80]    [Pg.83]    [Pg.393]    [Pg.32]    [Pg.50]    [Pg.65]    [Pg.83]    [Pg.395]    [Pg.31]   
See also in sourсe #XX -- [ Pg.31 ]



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3-Phenyl-3,4-dihydro-2-quinoxalinecarboxamide

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