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Stability functionalized Grignard reagents

The configurational stability of primary Grignard reagents can be studied by an interpretation of exchange effects in the proton resonance spectra as a function of temperature (Whitesides et al., 1963). These changes in spectra are related to the high energy barrier in heavily substituted ethanes. The molecule studied is shown below in three rotamer forms of which only two are non-equivalent.)... [Pg.257]

The regiochemistry of nucleophilic addition to an alkene or alkyne stabilized by a carbonyl group is a function of both the substrate and the nucleophile. Hard nucleophiles such as Grignard reagents tend to add... [Pg.620]

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See also in sourсe #XX -- [ Pg.514 ]



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