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Pyrazinones endoperoxidation

Dibenzyl-5-hydroxy-2(l//)-pyrazinone (106) gave the endoperoxide, 1,4-dibenzyl-2,3-dioxa-5,7-diazabicyclo[2.2.2]octane-6,8-dione (107) (hv, O2 J, Me2SO—CH2CI2, trace eosin, 20°C, 45 h —80%) analogues were made similarly and such processes have been reviewed. [Pg.207]

Methyl-5,6-diphenyl-2(l/0-pyrazinone (204) gave 5-rnclhyl-4,8-diphenyl-2,3-dioxa-5,7-diazabicyclo[2.2.2]oct-7-en-6-one (205) (hv, O2, Rose Bengal, CH2CI2, 50°C 52%), and thence the MeOH adduct, 8-niethoxy-5-niethyl-4,8-diphenyl-2,3-dioxa-5,7-diazabicyclo[2.2.2]octan-6-one (206) (MeOH, 20°C, dark >95% or by conducting the irradiation in McOH)7 ° The subsequent catabolic reactions of these and related endoperoxides have been Studied 2,35,1073,1443... [Pg.224]

Dye-sensitized photooxygenation of l-alkyl-2(l//)-pyrazinones (97) gives endoperoxides (98), the... [Pg.256]

See other pages where Pyrazinones endoperoxidation is mentioned: [Pg.207]    [Pg.42]   
See also in sourсe #XX -- [ Pg.224 ]

See also in sourсe #XX -- [ Pg.224 ]



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Endoperoxidation

Endoperoxide

Endoperoxides/endoperoxidation

Pyrazinone

Pyrazinones

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