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Organozinc compounds arylzinc halides

D.ii.d. Termination by Organozinc Compounds. Arylzinc halides, which are readily... [Pg.1421]

Organozinc compounds are also useful in palladium-catalyzed coupling with aryl and alkenyl halides. Procedures for arylzinc,156 alkenylzinc,157 and alkylzinc158 reagents have been developed. The ferrocenyldiphosphine dppf has been found to be an especially good Pd ligand for these reactions.159... [Pg.724]

In view of the synthetic significance of organozinc compounds,260 this tellurium-metal exchange was studied in more detail. It is used to prepare arylzinc reagents from diaryl tellurides or ditellurides, which are captured by allyl halides (Scheme 102).261... [Pg.631]

The cross-coupling of organozinc compounds has been accomplished using a number of metal enolate complexes, namely Rh(acac)(H2C=CH2)2 (6) , Co(acac)3 (30) °, Ni(acac)2 (47) , Li(acac) (107) and Cr(acac)3 (108) . For instance, complex 47 proved to be an extremely effective catalyst system for the Negishi cross-coupling of arylzinc halides (109) with aryl (110), heteroaryl and alkenyl halides, triflates and nonaflates to give the corresponding biaryl compounds (111) (equation 30). The solvent played an important role in these reactions and optimal conditions were found with 8 1 mixtures of THF and A-ethylpyrrolidinone (nep). Only 0.05 mol% of the nickel complex... [Pg.566]

See other pages where Organozinc compounds arylzinc halides is mentioned: [Pg.650]    [Pg.788]    [Pg.172]    [Pg.15]    [Pg.246]    [Pg.31]    [Pg.50]    [Pg.409]    [Pg.790]    [Pg.166]    [Pg.2029]   
See also in sourсe #XX -- [ Pg.57 ]



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Arylzinc

Arylzinc compounds

Arylzinc halides

Halides compounds

Organozinc

Organozinc compounds

Organozinc halides

Organozincates

Organozincs

Organozincs compounds

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