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Propargylic zinc reagent

Interestingly, silylated propargylic zinc reagents, such as 342, may be better viewed as the allenic zinc reagent 343 which reacts with an aldehyde via a cyclic transition state, affording only the a f/-homopropargylic alcohol 344 with 90% yield (Scheme 91) 22. Alkylzinc halides react only sluggishly with aldehydes or ketones. This reactivity can be... [Pg.349]

The formation of a stable, detectable fluorinated allylic or propargylic zinc reagent has not yet been accomplished by synthetic chemists. When perfluoroallyl iodide was reacted with zinc in DMF, only a low yield (ca 10%) of the presumed zinc reagent was detected... [Pg.733]

Poisson, J.-F. Chemla, F. Normant, J. F. Configurational stability of propargyl zinc reagents. Synlett 2001, 305-307. [Pg.228]

Scheme 7-52 5-exo-trig carbocyclization from a propargyl zinc reagent. [Pg.430]

Addition Reactions of Ally lie and Propargylic Zinc Reagents... [Pg.211]

See other pages where Propargylic zinc reagent is mentioned: [Pg.323]    [Pg.349]    [Pg.428]    [Pg.734]    [Pg.109]    [Pg.264]    [Pg.297]    [Pg.63]    [Pg.18]    [Pg.335]    [Pg.468]    [Pg.471]    [Pg.283]    [Pg.284]    [Pg.305]   
See also in sourсe #XX -- [ Pg.283 ]



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