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Ethyl 3-chloro-2-quinoxalinecarboxylate

Ethyl 3-chloro-2-quinoxalinecarboxylate gave ethyl 3-p-fluorobenzylamino-2-quinoxalinecarboxylate (109) [H2NCH2C6H4F-P (1 equiv), EtOH, reflux, 13 h 73% analogs likewise]or ethyl 3-morpholino-2-quinoxalinecarboxylate (110) [0[CH2CH2)NH (1 equiv), MeOH, reflux, 2h 34%]. ... [Pg.154]

Ethyl 3-chloro-2-quinoxalinecarboxylate (147, R = Cl) gave ethyl 3-phenoxy-2-quinoxalinecarboxylate (147, R = OPh) (PhONa, PhOH, 130°C, 14 h 80%)240... [Pg.161]

The unsymmetric 6-nitro-2,3-dihydro-l,4-ethanoquinoxaline (549, R = N02) and ethyl chloroformate naturally gave a mixture of ethyl 4-(2-chloro-ethyl)-7-nitro- (551) and ethyl 4-(2-chloroethyl)-6-nitro-1,2,3,4-tetrahydro-1-quinoxalinecarboxylate (552) (CHCI3, 20°C, 1 h 30% each, after... [Pg.75]

Ethyl 6,7-dimethyl-3-oxo-3,4-dihydro-2-quinoxalinecarboxylate gave ethyl 3-chloro-6,7-dimethyl-2-quinoxalinecarboxylate (9) (POCI3, 110°C, 10 min 75% note survival of the ester grouping). ... [Pg.135]

Several recent general papers on the properties of quinoxaline N-oxides have reported studies on the crystal structures of quinoxaline 1,4-dioxide,380 its 2,3-dimethyl derivative,380 ethyl 7-chloro-3-methyl-2-quinoxalinecarboxylate 1,4-dioxide,40 and N-(2-hydroxyethyl)-3-methyl-2-quinoxalinecarboxamide 1,4-dioxide 931 the NMR spectral data of quinoxaline 1,4-dioxide for comparison with those of related dioxides 348 the NMR data for biologically active quinoxalinecarboxamide dioxides 381 thermochemical data for several quinoxaline dioxides 183 and polaro-graphic or cyclic voltammetric data for 2,3-disubstituted quinoxaline dioxides.239 894... [Pg.230]


See other pages where Ethyl 3-chloro-2-quinoxalinecarboxylate is mentioned: [Pg.405]    [Pg.405]    [Pg.5]    [Pg.161]    [Pg.230]    [Pg.405]    [Pg.5]    [Pg.405]    [Pg.405]    [Pg.363]   


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3- -2-quinoxalinecarboxylic

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