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Crotyl addition 2,5-dimethylborolane

Masamune and cowotkers48 designed a set of chiral rrans-2,5-dimethylborolane-based reagents that show remarkable enantioselectivities in hydroboration,49 ketone reduction50 and crotyl addition to aldehydes.51 The chirality transfer also turns out to be highly efficient in the aldol reaction. Initial experiments were aimed at defining the structural parameters which affect the E(0) Z(0) ratios of the enolates prepared from various alkanethioates with 2,5-dimethylborolanyl triflate (90) under standard conditions... [Pg.258]

Garcia J, Kim B, Masamune S. Asymmetric addition of (Eland (Z)-crotyl-trans-2,5-dimethylborolanes to aldehydes. J. Org. Chem. 1987 52 4831 832. [Pg.316]

See other pages where Crotyl addition 2,5-dimethylborolane is mentioned: [Pg.386]    [Pg.666]   
See also in sourсe #XX -- [ Pg.2 , Pg.258 ]

See also in sourсe #XX -- [ Pg.258 ]

See also in sourсe #XX -- [ Pg.258 ]

See also in sourсe #XX -- [ Pg.2 , Pg.258 ]

See also in sourсe #XX -- [ Pg.258 ]



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2.5- Dimethylborolane

Crotyl

Crotyl- -2,5-dimethylborolanes

Crotylation

Dimethylborolanes

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