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Ethyl 3-methyl-2-quinoxalinecarboxylate

Ethyl 3-methyl-2-quinoxalinecarboxylate 1-oxide (249) from the corresponding 1,4-dioxide (250) [(MeO)3P, PrOH, reflux, 2.5 h 81% this selective 4-deoxygenation was not obtained with PCI3 or Na2S204]. ° ... [Pg.230]

Ethyl 3-methyl-2-quinoxalinecarboxylate from its 1,4-dioxide (261) (P2I4,... [Pg.233]

Ethyl 3-methyl-2-quinoxalinecarboxylate 1,4-dioxide (61, R = Et) gave methyl 3-methyl-2-quinoxalinecarboxylate 1,4-dioxide (61, R = Me) (Et3N, CaCl2, MeOH, 50°C, 2 h 80%).2 ... [Pg.328]

Ethyl 3-methyl-2-quinoxalinecarboxylate gave 7/-(2-dimethylaminoethyl)-3-methyl-2-quinoxalinecarboxamide (74) (neat H2NCH2CH2NEt2, reflux, 1 h ... [Pg.330]

Ethyl 3-methyl-2-quinoxalinecarboxylate 1-oxide Ethyl 3-methyl-2-quinoxalinecarboxylate 4-oxide 2-Ethyl-3-methylquinoxaline 1,4-dioxide... [Pg.407]

Ethyl 3-methyl 2-quinoxalinecarboxylate from its 1,4-dioxide (261) (Cl3SiSiCl3, CHC13, 5°C > 20°C, 4 h 74% SiIMe3, CHC13, 20°C, 48 h 85%) also several analogs using each reagent.412... [Pg.233]

Ethyl 3-methyl-2-quinoxalinecarboxylate (60, R = Et) gave 2-diethylaminoethyl 3-methyl-2-quinixalinecarboxylate (60, R = CH2CH2NEt2) (neat HOCH2 CH2NEt2, reflux, 4 h 21%) or 2-morpholinoethyl 3-methyl-2-quinoxaline-carboxylate [60, R = CH2CH2N(CH2CH2)20] [neat HOCH2CH2N(CH2 CH2)20, reflux, 4 h 66%].475... [Pg.328]

Ethyl 3-methyl-2-quinoxalinecarboxylate 1,4-dioxide gave iV,iV-bis(2-hydroxy-ethyl)-3-methyl-2-quinoxalinecarboxamide 1,4-dioxide (76) [(HOCH2CH2)2-NH, MeOH, 60°C, 8 h 51%) analogs likewise].940... [Pg.331]

See other pages where Ethyl 3-methyl-2-quinoxalinecarboxylate is mentioned: [Pg.5]    [Pg.233]    [Pg.407]    [Pg.407]    [Pg.5]    [Pg.407]    [Pg.407]   
See also in sourсe #XX -- [ Pg.5 , Pg.25 , Pg.233 ]

See also in sourсe #XX -- [ Pg.5 , Pg.25 , Pg.233 ]



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3- -2-quinoxalinecarboxylic

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