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Highly reduced, anionic cobalt complexes supported by bis(iminoacenaphthene) diimine (BIAN) ligands catalyze the dehydrogenation of amine boranes. Using the same catalysts, transfer hydrogenations of olefins, imines, and N‐heteroarenes with ammonia borane as a dihydrogen surrogate have been developed. Challenging trisubstituted olefins can be reduced under an external H2 pressure with ammonia borane...
Anionic α‐diimine cobalt complexes, such as [K(thf)1.5{(DippBIAN)Co(η4‐cod)}] (1; Dipp=2,6‐diisopropylphenyl, cod=1,5‐cyclooctadiene), catalyze the dehydrogenation of several amine‐boranes. Based on the excellent catalytic properties, an especially effective transfer hydrogenation protocol for challenging olefins, imines, and N‐heteroarenes was developed. NH3BH3 was used as a dihydrogen surrogate,...
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