- Stereospecific Ni-catalyzed cross-coupling of potassium alkenyltrifluoroborates with alkyl halides.
Stereospecific Ni-catalyzed cross-coupling of potassium alkenyltrifluoroborates with alkyl halides.
Organic letters (2014-03-29)
Gary A Molander, O Andreea Argintaru
PMID24666316
ABSTRACT
A general method for the alkenylation of alkyl electrophiles using nearly stoichiometric amounts of the air- and moisture-stable potassium organotrifluoroborates has been developed. Various functional groups were tolerated on both the nucleophilic and electrophilic partner. Reactions of highly substituted E- and Z-alkenyltrifluoroborates, as well as vinyl- and propenyltrifluoroborates, were successful, and no loss of stereochemistry or regiochemistry was observed.
MATERIALS
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Nickel, foil, 150x150mm, thickness 1.0mm, annealed, 99.98%
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Nickel, foil, 25x25mm, thickness 0.3mm, as rolled, 99.999%
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Nickel, foil, 25x25mm, thickness 1.0mm, as rolled, 99.99+%
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Nickel, microfoil, disks, 25mm, thinness 0.1μm, specific density 93.4μg/cm2, permanent mylar 3.5μm support, 99.99+%
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Nickel, foil, 150x150mm, thickness 0.25mm, annealed, 99.98%
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Nickel, foil, light tested, 50x50mm, thickness 0.0125mm, annealed, 99%
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Nickel, foil, not light tested, 148x300mm, thickness 0.003mm, 99.95%
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Nickel, insulated wire, 2m, conductor diameter 0.025mm, insulation thickness 0.0035mm, polyimide insulation
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Nickel, microfoil, disks, 10mm, thinness 0.5μm, specific density 438.8μg/cm2, permanent mylar 3.5μm support, 99.99+%
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Nickel, tube, 500mm, outside diameter 2.4mm, inside diameter 2.248mm, wall thickness 0.076mm, hard, 99.5%
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Nickel, foil, not light tested, 100x100mm, thickness 0.01mm, 99.95%
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Nickel, pellets, 20g, max. size 10mm, 99.99+%
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Nickel, foil, 150x150mm, thickness 1.6mm, 99%
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Nickel, pellets, 50g, max. size 15mm, 99.99+%
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Nickel, microfoil, disks, 25mm, thinness 0.25μm, specific density 222.55μg/cm2, permanent mylar 3.5μm support, 99.99+%
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Nickel, foil, 150x150mm, thickness 0.25mm, as rolled, 99.999%
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Nickel, foil, 25x25mm, thickness 0.1mm, annealed, 99%
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Nickel, foil, 150x150mm, thickness 0.3mm, as rolled, 99.999%
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Nickel, foil, 300x300mm, thickness 1.6mm, 99%
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Nickel, foil, light tested, 50x50mm, thickness 0.038mm, 99.9%
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Nickel, foil, not light tested, 25x25mm, thickness 0.002mm, 99.95%
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Nickel, foil, not light tested, 50x50mm, thickness 0.005mm, as rolled, 99.9%
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