Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Partial dienone hydrogenation

Conjugated cyclic dienone 104 was partially hydrogenated to the corresponding a,P-unsaturated ketone over 2% Pd-SrC03 in benzene as solvent (eq. 3.66).239 A similar... [Pg.126]

Air exposure of highly dispersed Ni on graphite affords a modified, less active catalyst (Ni-G2), owing to partial oxygenation of the metal. This catalyst allows bond selectivity in the hydrogenation of dienones in favor of the conjugated double bond ... [Pg.192]

Papaver somniferum.- Rapoport and Hodges have obtained from this species an enzyme which catalyzes the reduction of codeinone to codeine, in the presence of NADH as a coenz3nne. Another enzyme, partially purified by centrifugal fractionation, was obtained which catalyzed the oxidative coupling of the phenolic rings of reticuline to yield the dienone salutaridine . Hydrogen peroxide was utilized by this enzyme for the oxidation. A crude enzyme from this species converted morphine to the dimeric pseudomorphine and morphine -oxide . ... [Pg.124]

See other pages where Partial dienone hydrogenation is mentioned: [Pg.130]    [Pg.74]    [Pg.130]    [Pg.74]    [Pg.243]    [Pg.159]    [Pg.723]    [Pg.723]    [Pg.454]    [Pg.498]    [Pg.258]    [Pg.358]    [Pg.242]    [Pg.723]   
See also in sourсe #XX -- [ Pg.130 ]

See also in sourсe #XX -- [ Pg.130 ]



SEARCH



Partial hydrogenation

© 2024 chempedia.info