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Magnesium carbenoids Grignard reagent reactions

Reaction of magnesium carbenoids with Grignard reagents... 723... [Pg.717]

In 1990, Hahn and Tompkins reported an interesting multi-carbon homologation of alkyl halides by the reaction of magnesium carbenoid with a Grignard reagent (Scheme 2) . [Pg.723]

The electrophilic reaction of magnesium alkylidene carbenoids with other nucleophiles than the original Grignard reagent can also be carried out. For example, treatment of magnesium alkylidene carbenoid 157, derived from 147, with a-sulfonyl lithium carbanion afforded allenes 159 in moderated yields (equation 39/. ... [Pg.748]

Bis(dialkylamino)cyclopropenylium magnesium halides, like their lithium counterparts, react as nucleophiles in various reactions, but their use is much less extensive. Like typical Grignard reagents they undergo hydrolysis, alkylation and reactions with carbonyl compounds at the carbenoid carbon (equation 292)357. [Pg.616]

In this section, the reactions of gew-dibromocyclopropanes and dibromomethylsilanes with trialkylmagnesate reagents are described. Preparation of a chiral secondary Grignard reagent by alkylation of the chiral magnesium carbenoid species is also discussed. [Pg.120]

See other pages where Magnesium carbenoids Grignard reagent reactions is mentioned: [Pg.516]    [Pg.721]    [Pg.724]    [Pg.725]    [Pg.725]    [Pg.725]    [Pg.727]    [Pg.737]    [Pg.746]    [Pg.746]    [Pg.748]    [Pg.767]    [Pg.912]    [Pg.299]    [Pg.56]    [Pg.58]    [Pg.298]    [Pg.578]    [Pg.1274]    [Pg.140]    [Pg.143]    [Pg.145]    [Pg.288]    [Pg.251]   
See also in sourсe #XX -- [ Pg.723 , Pg.724 ]



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Magnesium Grignard reactions

Magnesium Grignard reagent

Magnesium carbenoids

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