Phosphine- and Amine-Borane Dehydrocoupling Using a Three-Coordinate Iron(II) β-Diketiminate Precatalyst
作者： Nathan T. Coles , Mary F. Mahon , Ruth L. Webster
DOI: 10.1021/ACS.ORGANOMET.7B00326
关键词: Chemistry 、 Catalytic cycle 、 β diketiminate 、 Polymer chemistry 、 Amine gas treating 、 Iron hydride 、 Deuterium 、 Photochemistry 、 Borane 、 Catalysis 、 Phosphine
摘要: Dehydrocoupling of phosphine- and amine-boranes is reported using an iron(II) β-diketiminate complex. far more facile than the phosphine counterpart, former proceeding at room temperature with 1 mol% iron precatalyst. This low loading sufficient to allow in situ kinetic analysis deuterium labeling studies be carried out. An amido-borane complex has also been isolated, which believed catalyst resting state. Overall, this allowed us postulate a catalytic cycle proceeds via release diborazane, hydride, intermediates.
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