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2-Methyl-6-phenylpyrazine

Cyanomethyl-3-phenylpyrazine (16) gave 2-methyl-3-phenylpyrazine (18) via the unisolated carboxylic acid (17) (6 M HC1, reflux, 3 h 66%).1272 Also other examples.971 10151027... [Pg.302]

Methyl-3-phenyl-2-pyrazinamine 1-oxide 2- Methyl-3 -phenylpyrazine... [Pg.447]

Methy 1-6-pheny 1-2,3 (1 HAH )-py razinedione 2-Methyl-3-phenylpyrazine 1,4-dioxide... [Pg.447]

Methyl-5-phenylpyrazine 1,4-dioxide 2-Methyl-6-phenylpyrazine 1,4-dioxide 2-Methyl-3-phenylpyrazine 1-oxide 2-Methyl-3-phenylpyrazine 4-oxide 2-Methyl-5-phenylpyrazine 1-oxide 2-Methyl-5-phenylpyrazine 4-oxide... [Pg.448]

Another key intermediate for pteridine synthesis was also seen in 2-amino-3-ethoxycarbonyl-5-phenylpyrazine 1-oxide which reacts with various amines to form the corresponding amides followed by cyclization with triethyl orthoformate giving 3-alkyl-6-phenyl-4(3/7)pteridinone 8-oxides <87JHC1109>. The synthesis of 2,4-diamino-6-methylpteridine 5-oxide (371) was achieved from 5-methyl-pyrazine-2-carboxamide (366) via the 4-oxide (367), a Hofmann degradation (368), bro-mination (369), and cyanation (370) followed by cyclization with guanidine to give (371) (Scheme 60) <93JHC841>. [Pg.720]

Flash pyrolysis of 5,7-diphenyl-2,3-dihydro-1/7-1,4-diazepine (34, R = H) at 700°C in a vacuum afforded 2-phenylpyrazine (35) in 21% yield, after separation from a pyrimidine the methyl substrate (34, R = Me) also gave a small yield of the same product (35) and 6-phenyl-2,3-dihydro-17/-l,4-diazcpine gave some unsubstituted pyrazine.176,1698... [Pg.52]

Mcthyl-5-phenyl-2(l//)-pyrazinone (4) gave 2-chloro-3-methyl-5-phenylpyra-zine (5) (P0C13,175°C, sealed, 18 h 92% beware of pressure within the tube even when cooled ) 57 such a sealed reaction also converted 5-chloro-3-phcnyl-2( l//)-pyrazinone into 2,5-dichloro-3-phenylpyrazine (6) (185°C, 5 h 92%).1382... [Pg.138]

Chloro-3-methyl-5-phenylpyrazine 1-oxide (44) gave 2,6-dichloro-3-methyl-5-phenylpyrazine (45) (POCl3, 80°C, 30 min 93%) analogues likewise.57... [Pg.145]

Hydrolysis. 2-Methoxy-3-methyl-5-phenylpyrazine (16) gave 3-methyl-5-phenyl-2(l//)-pyrazinone (17) (6 M HC1, reflux, 3 h 97%) 1307 other products like 3,6-diisopropyl-2( I //(-pyrazinonc (18, R = Pr ) (97%)1311 and 3,6-diphenyl-2(l/7)-pyrazinone (18, R = Ph) (84%)82 were made similarly. Hydriodic acid may also be used.1307... [Pg.193]

Hydrazino-6-methyl-3-phenylpyrazine 4-oxide gave 2-methyl-5-phenyl-pyrazine 4-oxide (CuS04, AcOH—H20, 95°C, 1 h >42%).80... [Pg.294]

Azido-5-methyl-2-pyrazinamine 2-Azidomethylpyrazine 2-Azido-3-methylpyrazine 2-Azido-3-phenylpyrazine... [Pg.367]

Bromo-3-methyl-5-phenylpyrazine 5-Bromomethyl-6-phenyl-2,3-pyrazine-... [Pg.378]

Chloro-3-methoxy-6-methoxymethyl-1 -phenyl-2n //)-pyrazinone 5-Chloro-6-methoxy methyl-1,3-diphenyl-20 //)-pyrazinone 2-Chloro-6-methoxy-3-methyl-5-phenylpyrazine 2-Chloro-6-methoxy-5-methyl-3-phenylpyrazine 5-Chloro-3-methoxy-6-methyl-l-phenyl-2( 1 //t-pvTa/ini iie... [Pg.391]

Dimethylamino-7V-hydroxy-2-pyrazinecarboxamide 6-Dimethylamino-7V-hydroxy-2-pyrazinecarboxamidine 2-Dimethylamino-5-iodopyrazine 2-Dimethylamino-6-iodopyrazine 2-Dimethylamino-5-iodopyrazine 4-oxide 2-Dimethylamino-3-isobutylpyrazine 2-Dimethylamino-6-isobutylpyrazine 2-Dimethylamino-5-methoxy-3,6-dimethylpyrazine 2-Dimethylaminomethyl-3,6-bismethylthiopyrazine 2-Dimethylamino-6-methyl-5-phenylpyrazine 4-oxide 2-Dimethylamino-3-methylpyrazine 2-Dimethylamino-6-methylpyrazine 2-Dimethylamino-3-methylpyrazine 4-oxide Dimethyl 5-amino-6-oxo-1,6-dihydro-2,3-pyrazinedicarboxylate 2-Dimethylamino-5-phenylpyrazine 2-(3-Dimethylaminopropyl)-6-methylpyrazine... [Pg.410]

Ethylthio-2-pyrazinecarbonitrile 6-Ethylthio-2-pyrazinecarbonitrile 6-Ethylthio-2-pyrazinecarbothioamide 3-Ethylthio-2-pyrazinecarboxamide 6-Ethylthio-2-pyrazinecarboxamide 3-Ethylthio-2-pyrazinecarboxylic acid 6-Ethylthio-2-pyrazinecarboxylic acid 3-Ethylthio-2,5-pyrazinedicarboxamide 2-Ethylthiopyrazine 1-oxide 2-Ethyl-3,5,6-trimethylpyrazine 2-Ethyl-3,5,6-triphenylpyrazine 2-Ethyl-3-vinylpyrazine 2-Ethynyl-3,6-dimethylpyrazine 2-Ethynyl-3-methylpyrazine 2-Fluoro-5,6-dimethoxy-3-methylpyrazine 2- Fluoro- 5,6-dimethoxypyrazine 2-Fluoro-3,6-dimethylpyrazine 2-Fluoro-3-(l-hydroxyethyl)pyrazine 2-Fluoro-3-iodopyrazine 2-Fluoromethyl-5-methyl-3,6-diphenylpyrazine 2- Fluoro- 5-phenylpyrazine 2-Fluoro-3-phenylthiopyrazine... [Pg.423]

Hydrazino-5,6-diphenyl-2(l//)-pyrazinone 2-Hydrazino-3-isobutyl-5-phenylpyrazine 2-Hydrazino-5-methyl-3-propylpyrazine... [Pg.425]

Iodo-3-methyl-2-pyrazinamine 2-Iodo-3-methylpyrazine 2-Iodo-5-phenylpyrazine 2-Iodo-3-phenylthiopyrazine... [Pg.432]

See other pages where 2-Methyl-6-phenylpyrazine is mentioned: [Pg.156]    [Pg.157]    [Pg.447]    [Pg.447]    [Pg.448]    [Pg.448]    [Pg.275]    [Pg.156]    [Pg.157]    [Pg.158]    [Pg.158]    [Pg.158]    [Pg.24]    [Pg.352]    [Pg.352]    [Pg.352]    [Pg.354]    [Pg.354]    [Pg.354]    [Pg.367]    [Pg.367]    [Pg.367]    [Pg.367]    [Pg.367]    [Pg.368]    [Pg.392]    [Pg.392]    [Pg.402]    [Pg.402]    [Pg.403]    [Pg.403]    [Pg.408]    [Pg.436]    [Pg.436]    [Pg.436]    [Pg.436]    [Pg.447]    [Pg.447]    [Pg.448]   
See also in sourсe #XX -- [ Pg.302 ]



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2-Chloro-3 -methyl-5 -phenylpyrazine

2-Chloro-6-hydroxy-3-methyl-5-phenylpyrazine

2-Chloro-6-hydroxy-3-methyl-5-phenylpyrazine methylation

2-Chloro-6-methoxy-3-methyl-5-phenylpyrazine

2-Methoxy-3 -methyl-5 -phenylpyrazine

2-Phenylpyrazine

2.3- Dichloro-5-methyl-6-phenylpyrazine

3- Hydroxy-5-methyl-2-phenylpyrazine

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