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5-Methyl-2,3 -pyrazinedione

Ethyl yV-[2-(tert-butoxycarbonylamino)propionyl]glycinate (39) gave 3-methyl-3,6-dihydro-2,5(l//,4//)-pyrazinedione (40) (200°C, A, 30... [Pg.8]

In a similar manner, 3-isobutyl-6-methyl-3,6-dihydro-2,5(l//,4//)-pyrazinedione (9, R = Me) gave 2-chloro-3-isobutyl-6-methylpyrazine (10, R = Me), 2-chloro-6-isobutyl-3-methylpyrazine (11, R = Me), and 2,5-dichloro-3-isobutyl-6-methylpyrazine (12, R = Me) (27, 21, and 4%, respectively).295... [Pg.139]

Chloro-1 -methyl-2,3(1//,4//)-pyrazinedione (63) gave a separable mixture of 5-chloro-3-methoxy-l-methyl-2(l//)-pyrazinone (64) and 5-chloro-l,4-di-methyl-2,3(l//,4Z/)-pyrazinedione (65) (H2CN2, Et20, h 47 and 34%, respectively).1309... [Pg.200]

Picroroccellin, 3, 6-dibenzyl-3-hydroxy-6-methoxy-l(or4)-methyl-3, 6-dihydro-2, 5(1/7, 4//)-pyrazinedione (revised structure), a Roccella sp lichen metabolite [87291-18-7].1036,1702... [Pg.243]

Chloro-l -methyl-2,3(1 //,4//) -pyrazinedione 2-Chloro-3-methylpyrazine 1-oxide 2-Chloro-3-methylpyrazine 4-oxide... [Pg.393]

Ethyl 2-[2-chloro-7V-(l-phenylethyl)acetamido]propionamide (73) gave 3-methyl-4-(l-phenylethyl)-3,6-dihydro-2,5 (l f,4ff)-pyrazinedione (74) (J M NHj/EtOH, 20°C, 24 h ... [Pg.13]

Bis(methoxycarbonylmethyl)amme (255) gave l,4-bis(methoxycarbonyl-methyl)-3,6-dihydro-2,5(lH, 4//)-pyrazinedione (256) (EtsB or Ph llSi, PhMe, reflux, 48 h 54%) also analogues ... [Pg.35]

See other pages where 5-Methyl-2,3 -pyrazinedione is mentioned: [Pg.1043]    [Pg.5]    [Pg.7]    [Pg.85]    [Pg.178]    [Pg.337]    [Pg.368]    [Pg.450]    [Pg.450]    [Pg.460]    [Pg.5]    [Pg.7]    [Pg.14]    [Pg.85]    [Pg.140]    [Pg.178]    [Pg.191]    [Pg.202]    [Pg.222]    [Pg.337]    [Pg.393]    [Pg.447]    [Pg.450]    [Pg.289]   
See also in sourсe #XX -- [ Pg.12 ]



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3-Methyl-3,6-dihydro-2,5 pyrazinedione

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