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Olefins Negishi cross-coupling reaction

When the metallic additive to the intermediate 374 was zinc dihalide (or another Lewis acid, such as aluminum trichloride, iron trichloride or boron trifluoride), a conjugate addition to electrophilic olefins affords 381 . In the case of the lithium-zinc transmetallation, a palladium-catalyzed Negishi cross-coupling reaction with aryl bromides or iodides allowed the preparation of arylated componnds 384 ° in 26-77% yield. In addition, a Sn2 allylation of the mentioned zinc intermediates with reagents of type R CH=CHCH(R )X (X = chlorine, bromine) gave the corresponding compounds 385 in 52-68% yield. ... [Pg.710]

See other pages where Olefins Negishi cross-coupling reaction is mentioned: [Pg.726]    [Pg.60]    [Pg.75]    [Pg.91]    [Pg.101]    [Pg.344]    [Pg.369]    [Pg.87]    [Pg.2029]    [Pg.662]    [Pg.662]    [Pg.425]    [Pg.42]    [Pg.249]    [Pg.109]    [Pg.110]    [Pg.29]    [Pg.30]    [Pg.7]    [Pg.143]    [Pg.568]    [Pg.902]    [Pg.864]   
See also in sourсe #XX -- [ Pg.84 ]



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Coupling reactions olefins

Cross Negishi reactions

Cross-coupling reactions Negishi couplings

Negishi

Negishi coupling

Negishi coupling reaction

Negishi cross-coupling

Negishi cross-coupling reactions

Negishi reaction

Olefin coupling

Olefin cross

Olefin reactions

Olefination reactions

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