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6-Methyl-5-phenyl-2 1// -pyrazinone

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]

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]

The polarographic reduction of 6-methyl-3-phenyl-2(l//)-pyrazinone (105) has been studied.983... [Pg.207]

Acetoxy methyl- 5-phenyl- 2(1 77)-pyrazinone 5-Acetoxy methyl- 3-phenyl- 2(1 77)-pyrazinone 2-(l-Acetoxy-2-methylpropyl)-3-chloro-5-isobutylpyrazine... [Pg.354]

Benzyl-6-methyl-3-phenyl-2(177)-pyrazinone 6-Benzyl-3-methyl-5-phenyl-2(177)-pyrazinone 6-Benzyl-5-methyl-3-phenyl-2(177)-pyrazinone 6-Benzyl-5-methyl-3-propyl-2(177)-pyrazinone... [Pg.372]

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]

Methoxy-1 -methy l-2( 1/7)-pyrazinono 6-Methoxy-l-methyl-2(l/7)-pyrazinone 5-Methoxy-3-methylthio-2-pyrazinamine 3-Methoxy-1 -phenyl-6-(prop-2-... [Pg.437]

Dimethylamino-2,2-dimethyl-2H-azirine (22 and 4-isopropyl-2-trifluo-romethyl-5-oxazolinone (28) gave 5-dimethylamino-3-isopropyl-6,6-di-methyl-3,6-dihydro-2(l//)-pyrazinone (29) (MeCN, reflux, N2, 1 h 60% a rational mechanism was suggested) analogues, like 3-allyl-5-dimethy-lamino-6,6-dimethyl-3-phenyl-3,6-dihydro-2(l /)-pyrazinone (44%), were made similarly. ... [Pg.51]

See other pages where 6-Methyl-5-phenyl-2 1// -pyrazinone is mentioned: [Pg.302]    [Pg.305]    [Pg.160]    [Pg.3]    [Pg.26]    [Pg.383]    [Pg.385]    [Pg.392]    [Pg.392]    [Pg.392]    [Pg.429]    [Pg.429]    [Pg.429]    [Pg.429]    [Pg.429]    [Pg.429]    [Pg.432]    [Pg.435]    [Pg.448]    [Pg.448]    [Pg.448]    [Pg.448]    [Pg.448]    [Pg.448]    [Pg.26]    [Pg.50]    [Pg.53]   
See also in sourсe #XX -- [ Pg.193 ]



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3- Methyl-2 -pyrazinone

3- Methyl-5-phenyl-2(l//(-pyrazinone

5-Methyl-2 -pyrazinones

6- Phenyl-2( 17/(-pyrazinone

Pyrazinone

Pyrazinones

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