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Ethyl 5-amino-2-pyrazinecarboxylate

Ethylamino-2-pyrazinecarbonitrile 6-Ethylamino-2-pyrazinecarbothioamide Ethyl 3-amino-2-pyrazinecarboximidate Ethyl 3-amino-2-pyrazinecarboxylate Ethyl 5-amino-2-pyrazinecarboxylate Ethyl 6-amino-2-pyrazinecarboxylate... [Pg.420]

Pyrazinamine gave ethyl 3-amino-2-pyrazinecarboxylate (65, R = Et) (EtO2CAc, H2sb4. FeSO4, 30% H2O2, -10 20°C, 1 h 71%) ° or methyl... [Pg.310]

Amino-6-ethyl-2-pyrazinecarboxamide 3-Amino-6-ethyl-2-pyrazinecarboxylic acid 3-Amino-5-formyl-2-pyrazinecarbonitrile... [Pg.362]

Methyl 3-amino-6-ethyl-2-pyrazinecarboxylate Methyl 3-amino-6-iodo-2-pyrazinecarboxylate Methyl 3-amino-5-isobutyl-6-oxo-l,6-dihydro-... [Pg.441]

Methyl 2-cyano-A-(2-hydroxyimino-4-mcthylvalcryl)glycinatc (46, R = Me) gave methyl 3-amino-5-isobutyl-6-oxo-l, 6-dihdyro-2-pyrazinecarboxylate 4-oxide (47, R = Me) (AcOH, 70°C, 3 h >32%) 337 the ethyl ester (47, R = Et) (>62%) was made similarly.848... [Pg.9]

Ethyl 2-cyano-2-(tosyloxyimino)acetate (261) and diethyl 3-amino-4-cyanopent-2-enedioate (262) gave ethyl 6-cyano-3-(a-cyano-a-ethoxycarbonylmethyl)-5-oxo-4,5-dihydro-2-pyrazinecarboxylate (263) (Et3N, MeCN, 20°C, 2 days 70%) 1315 also analogues.301,1315... [Pg.36]

Ethyl 3-amino-6-benzyloxy-5-isobutyl-2-pyrazinecarboxylate 4-oxide (120, R = C02Et) gave 5-benzyloxy-3-hydroxymethyl-6-isobutyl-2-pyrazinamine 1-oxide (120, R = CH2OH) (Bu 2A1H, CHC13—C6H14, 3°C, 45 min 65%).848... [Pg.209]

Ethyl 3-amino-6-phenyl-2-pyrazinecarboxylate from its 4-oxide (251) (PC13, THF, 0 - 20°C, 40 min 79%).1522 Also other examples.544 1339,1517,1530... [Pg.231]

Ethyl 6-amino-2-chloromethyl-5-cyano-2-pyrazinecarboxylate from its 1-oxide (255) [(MeO)3P, PrOH, 20 - 5°C, 12 h 77%].773... [Pg.232]

Pyrazinecarboxylic acid (32, R = H) gave methyl 2-pyrazinecarboxylate (32, R = Me) (MeOH, trace H2S04, reflux, 48 h 85-95%)236,460 or the corresponding ethyl ester (82, R = Et) (EtOH, H2S04, reflux, 7 h 74%) 896 3-amino-2-pyrazinecarboxylic acid gave methyl 3-amino-2-pyrazinecarboxy-late (MeOH, H2S04, 65°C, 2 h 57%).332... [Pg.304]

Ethyl 3-amino-6-phenyl-2-pyrazinecarboxylate (80, R = OEt) gave 3-amino-/V-methyl-6-phenyl-2-pyrazinecarboxamide (80, R = NHMe) [MeNH2, H20, 80°C, sealed ( ), 2 h 85%] 1522 also many analogues and homologues likewise] 1339 1517 1522 1604... [Pg.312]

Methyl 2-pyrazinecarboxylate (90) gave A -methyl-2-pyrazinecarbohydrazide (89) without any of the. V-m ethyl isomer (91) [MeHNNH2, EtOH, reflux, 12 h 81% the isomer (91) can be made from 2-pyrazinecarbonyl chloride see Section 8.3.2] analogous esters behaved similarly to give, for example, 3-amino-/V -methyl-2-pyrazinecarbohydrazide (71%).1265... [Pg.313]

Ethyl 3-amino-6-hydroxyiminomethyl-2-pyrazinecarboxylate (311) gave a solution of the carbonitrile oxide (312), and thence the cycloadduct, 3-(5-amino-6-ethoxycarbonylpyrazin-2-yl)-3a,4,5,6a-tetrahydrofuro[3,2-d]isoxazole (313) [N-chlorosuccinimide, Me2NCHO, 60°C, N2, 3 h then 2,3-dihydrofuran j, Et j, ... [Pg.346]

In a similar way, ethyl 3-amino-6-hydroxyiminomethyl-2-pyrazinecarboxylate 4-oxide (314) gave ethyl 3-amino-6-(5-phenylisoxazol-3-yl)-2-pyrazinecar-boxylate 4-oxide (315) (as before but using PhC=CH 55%) 836 also many analogues for elaboration to pteridines.836... [Pg.348]

Ethyl 3-amino- l-benzyl-5-isobutyl-6-oxo-1,6-dihydro-2-pyrazinecarboxylate 4-oxide Ethyl 3-amino-6-benzyloxy-5-isobutyl-2-pyrazinecarboxylate 4-oxide Ethyl 3-amino-6-chloro-5-ethoxy-2-pyrazinecarboxylate Ethyl 6-amino-3-chloromethyl-5-cyano-2-pyrazinecarboxylate Ethyl 6-amino-3-chloromethyl-5-cyano-2-pyrazinecarboxylate 1-oxide Ethyl 3-amino-5-chloro-6-methyl-2-pyrazinecarboxylate Ethyl 3-amino-5-chloro-6-phenyl-2-pyrazinecarboxylate Ethyl 5-amino-6-cyano-3-methyl-2-pyrazinecarboxylate Ethyl 6-amino-5-cyano-3-methyl-2-pyrazinecarboxylate Ethyl 6-amino-5-cyano-3-methyl-2-pyrazinecarboxylate 1-oxide Ethyl 3-amino-5,6-dimethyl-2-pyrazinecarboxylate 5-Ethylamino-6-ethylcarbamoyl-3-methylami no-2-pyrazinecarboxamide... [Pg.419]

Ethylaminoethyl)pyrazine Ethyl 3-amino-6-formyl-2-pyrazinecarboxylate... [Pg.419]

Ethyl 3-amino-5-isobutyl-6-oxo-1,6-dihydro-2-pyrazinecarboxylate 4-oxide Ethyl 3-amino-5-isopropenyl-6-methyl-2-pyrazinecarboxylate 4-oxide Ethyl 3-amino-6-(2-methylprop-l-enyl)-2-pyrazinecarboxylate 4-oxide... [Pg.419]

Ethyl 3-amino-3-pyrazinecarboxylate 4-oxide Ethyl 5-azidocarbonyl-2-pyrazinecarboxylate 2-Ethyl-3,6-bis(2-hydroxyethyl)pyrazine... [Pg.420]

Ethyl 5-amino-2-pyrazinecarboxylate (12) gave ethyl 5-oxo-4,5-dihydro-2-pyrazinecarboxylate (13) (NaNO2, H2SO4, 3 -> 45°C, 1 min 80% the use of concentrated H2SO4 ensured minimal hydrolysis of the ester grouping). ... [Pg.192]

See other pages where Ethyl 5-amino-2-pyrazinecarboxylate is mentioned: [Pg.310]    [Pg.420]    [Pg.194]    [Pg.27]    [Pg.38]    [Pg.192]    [Pg.310]    [Pg.420]    [Pg.420]    [Pg.370]    [Pg.274]    [Pg.194]    [Pg.420]    [Pg.420]    [Pg.420]    [Pg.420]    [Pg.420]    [Pg.420]    [Pg.420]    [Pg.420]   
See also in sourсe #XX -- [ Pg.310 ]

See also in sourсe #XX -- [ Pg.310 ]



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2-pyrazinecarboxylate

5-Amino-2-ethyl

Ethyl 2-pyrazinecarboxylate

Ethyl 3-amino-6- 2-pyrazinecarboxylate 4-oxide

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