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Crotyllithium reagents

Crotyllithium reagents are ambident nucleophiles and can react with electrophiles either at the a- or y-carbon. The regiochemistry of attack depends on many factors, such as structure, the electrophile, and the solvent. Generally, unhindered carbonyl compounds preferentially add to crotyllithiums at the y-position. [Pg.280]

While equilibration of the endo- and exo-forms of crotyllithium is very fast, the corresponding potassium reagents are remarkably stable and may be intercepted with electrophiles (E" ).- However, after several hours, the crotylpotassium compounds also equilibrate, surprisingly favoring the endo-form over the sterically less hindered exo-form. ... [Pg.280]

Related Reagents. Allyllithium Crotyllithium 9-[l-(Trimethylsilyl)-2( )-butenyl]-9-borabicyclo[3.3. IJnonane 5-Trimethylsily 1-1,3-pentadiene... [Pg.584]

See other pages where Crotyllithium reagents is mentioned: [Pg.10]    [Pg.38]    [Pg.977]    [Pg.1000]    [Pg.10]    [Pg.38]    [Pg.977]    [Pg.1000]    [Pg.10]    [Pg.38]    [Pg.977]    [Pg.1000]    [Pg.10]    [Pg.38]    [Pg.977]    [Pg.1000]    [Pg.10]    [Pg.38]    [Pg.977]    [Pg.1000]    [Pg.10]    [Pg.38]    [Pg.977]    [Pg.1000]    [Pg.234]    [Pg.5]    [Pg.10]    [Pg.21]    [Pg.24]    [Pg.989]    [Pg.1004]    [Pg.5]    [Pg.10]    [Pg.21]    [Pg.24]    [Pg.989]    [Pg.1004]    [Pg.135]    [Pg.5]    [Pg.10]    [Pg.21]    [Pg.24]    [Pg.989]    [Pg.1004]   
See also in sourсe #XX -- [ Pg.279 , Pg.280 ]



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Crotyllithium

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