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2- Methylamino-5-phenylpyrazine

Phenylpyrazine (44) gave a separable mixture of 5-phenyl- (43) and 3-phenyl-2-pyrazinamine (43a) (KNH2, liquid NH3, 33°C, 24 h —40 and —10%, respectively) the same substrate (44) gave only 2-methylamino-5-phenylpyrazine (45) (KNHMe, MeNH2, 6°C, 3 h 60%).1457... [Pg.266]

Carbamoyl-3-hydroxypyrazine refluxed with aniline gave 2-hydroxy-3-7V-phenylcarbamoylpyrazine (1055) and 2-amino-3-carbamoyl-5,6-diphenylpyrazine refluxed with benzylamine gave 2-amino-3-A -benzylcarbamoyl-5,6-diphenylpyrazine but a similar reaction with piperidine was unsuccessful (451). 3-Methylamino-2-yV-methylcarbamoyl-5-phenylpyrazine was unchanged when heated with liquid ammonia in dry ethanol at 210° for 2 hours (453). 2,6-Diamino-3-carbamoyl-5-chloropyrazine in isopropanol with 1 mol of potassium hydroxide and 1 -amidino-... [Pg.280]

See other pages where 2- Methylamino-5-phenylpyrazine is mentioned: [Pg.442]    [Pg.442]    [Pg.306]    [Pg.347]    [Pg.442]    [Pg.176]    [Pg.243]    [Pg.280]    [Pg.442]   
See also in sourсe #XX -- [ Pg.266 ]



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2-Phenylpyrazine

5 -methylamino

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