3- Amino-5-phenyl-2-pyrazinecarbaldehyde

Amino-5-phenyl-2-pyrazinecarbaldehyde (19, R = H) gave 3-amino-5-phenyl-2-pyrazinecarboxylic acid (19, R = OH) (KMn04, HzO, 20°C, 1 h 28%).1385... 

Amino-5-phenyl-2-pyrazinecarbaldehyde 3-Amino-5-phenyl-2-pyrazinecarbonitrile 3-Amino-6-phenyl-2-pyrazinecarbonitrile 3-Amino-6-phenyl-2-pyrazinecarbonitrile 4-oxide 3-Amino-A-phenyl-2-pyrazinecarboxamide 3-Amino-5-phenyl-2-pyrazinecarboxamide 3-Amino-6-phenyl-2-pyrazinecarboxamide 3-Amino-6-phenyl-2-pyrazinecarboxamide 4-oxide... 

Phenylpteridine (117) gave 3-ethyliminomethyl-6-phenyl-2-pyrazinamine (119) (neat EtNH2, 20°C, 4 h 78% via the adduct (118)] or a separable mixture of 4-ethylamino-7-phenylpteridine (120) and 3-amino-5-phenyl-2-pyrazinecarbaldehyde (121) [neat EtNH, KMnO4 (1 mol), 17°C, 5 h 26 and 38%, respectively, after separation the second, presumably via the Schiff base (119)] the aldehyde (121) was oxidized further to 3-ainino-5-phenyl-2-pyrazinecarboxylic acid (122) (KMnO4, H,O, 20°C, 1 h 28%). ... 

Amino-6-cyclohexyl-2-pyrazinecarboxamide 3-Amino-5-cyclohexyl-2-pyrazinecarboxylic acid 3-Amino-6-cyclohexyl-2-pyrazinecarboxylic acid 3-Amino-/V-cyclopentyl-2-pyrazinecarboxamide 3-Amino-6-cyclopropyl-2-pyrazinecarbonitrile 3-Amino-6-cyclopropyl-2-pyrazinecarboxamide 3-Amino-6-cyclopropyl-2-pyrazinecarboxylic acid 3-Amino-5,6-dichloro-2-pyrazinecarbaldehyde 3-Amino-5,6-dichloro-2-pyrazinecarbonitrile 3-Amino-5,6-dichloro-2-pyrazinecarboxamide 3-Aniino-5,6-dichloro-2-pyrazinecarboxylic add 3-Amino-6-diethylaminomethyl-2-pyrazinecarbonitrile 3-Amino-5-diethylamino-2,6-pyrazinedicarbonitrile 5-Amino-3-dimethylamino-6-nitro-2-pyrazinecarbonitrile 3-Amino-5-dimethylamino-6-phenyl-2-pyrazinecarbohydrazide... 

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