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Organolithium reagents transmetalation

Coleman established the hydroxypropyl stereochemistry via addition of a homochiral a-alkoxyalkyl organometallic species. This reagent was prepared in high enantiomeric excess using a Noroyi BINAL-H reduction of organostannane 33, which was transmetallated with ra-BuLi to achieve the desired organolithium reagent 35 (Scheme 7.5). Both enantiomers of 35 could be obtained via this route. [Pg.163]

Many functional groups are incompatible with organolithium reagents. Execution of transmetalations at very low temperatures, however, enables functionalized... [Pg.45]

TRANSMETALLATION REACTIONS 4.8.1 Lithium-tellurium exchange generation of organolithium reagents... [Pg.228]

Organometallic reagents, prepared from fluorohalocarbons, including Grig-nard reagents [S2] or organolithium reagents prepared by transmetallation [80], are silylated with readily available alkylchlorosilanes (equations 70 and 71). [Pg.597]

See other pages where Organolithium reagents transmetalation is mentioned: [Pg.121]    [Pg.9]    [Pg.28]    [Pg.633]    [Pg.94]    [Pg.383]    [Pg.5]    [Pg.912]    [Pg.45]    [Pg.110]    [Pg.121]    [Pg.45]    [Pg.110]    [Pg.121]    [Pg.391]    [Pg.1197]    [Pg.13]    [Pg.871]    [Pg.951]    [Pg.13]    [Pg.230]    [Pg.893]    [Pg.651]    [Pg.420]    [Pg.420]    [Pg.1377]    [Pg.419]    [Pg.134]    [Pg.502]    [Pg.723]    [Pg.108]    [Pg.341]    [Pg.1377]    [Pg.614]    [Pg.219]    [Pg.5328]    [Pg.614]    [Pg.41]    [Pg.45]    [Pg.110]   
See also in sourсe #XX -- [ Pg.45 ]

See also in sourсe #XX -- [ Pg.45 ]

See also in sourсe #XX -- [ Pg.45 ]



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Organolithium reagents

Organolithiums reagents

Transmetalation

Transmetalations

Transmetallating reagent

Transmetallation

Transmetallations

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