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Grignard reagents, bonding reduction with, mechanism

The mechanism of the Heck reaction with Pd(OAc)2 probably involves the initial in situ reduction of the Pd " ion to Pd(0), which then inserts in the C-X bond (recall the formation of the Grignard reagent from Mg and halides). The species R-PdX that is formed adds to the double bond in the sense of R and PdX, which in an intramolecular reaction will lead to a cyclic product. The adduct eliminates H-PdX to regenerate a double bond. This proposed mechanism is illustrated with the synthesis of the benzofuran 4.36 in Scheme 4.39. [Pg.79]


See other pages where Grignard reagents, bonding reduction with, mechanism is mentioned: [Pg.733]    [Pg.733]    [Pg.733]    [Pg.733]    [Pg.90]    [Pg.71]    [Pg.133]    [Pg.109]    [Pg.109]    [Pg.90]    [Pg.307]    [Pg.90]    [Pg.651]    [Pg.870]    [Pg.453]    [Pg.109]    [Pg.29]    [Pg.550]    [Pg.90]    [Pg.62]    [Pg.35]    [Pg.707]    [Pg.18]    [Pg.445]    [Pg.379]    [Pg.186]    [Pg.891]    [Pg.975]    [Pg.395]    [Pg.398]    [Pg.255]    [Pg.257]    [Pg.239]    [Pg.370]    [Pg.427]    [Pg.1127]    [Pg.19]   
See also in sourсe #XX -- [ Pg.1308 ]




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Bonding mechanical

Bonding mechanisms

Bonds reduction

Grignard reagents, bonding

Grignard reduction

Mechanical bond

Mechanism Grignard reagents

Mechanism reagents

Reduction reagents

Reduction with mechanism

Reduction, mechanism

Reductive mechanism

With Grignard Reagents

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