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The synthesis of the new bulky vinyllithium reagent (MeIPr=CH)Li, (MeIPr=[(MeCNDipp)2C]; Dipp=2,6‐iPr2C6H3) is reported. This vinyllithium precursor was found to act as a general source of the anionic 2σ, 2π‐electron donor ligand [MeIPr=CH]−. Furthermore, a high‐yielding route to the degradation‐resistant SiII precursor MeIPr⋅SiBr2 is presented. The efficacy of (MeIPr=CH)Li in synthesis was demonstrated...
Eight new aminoboron compounds derived from primary diamines and the pinacol‐protected product of 3‐fluoro‐2‐formylphenylboronic acid have been prepared and characterized fully. Reactions proceed to give the corresponding cyclic products arising via initial aldimine formation followed by a secondary hydroamination step. One compound contains a pendant amine group which was used to make a novel boron‐containing...
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