进行了详细的 DFT 计算和实验,以研究两种不同亚胺的硼氢化机理。我们的研究结果表明,BAr F 3催化的亚胺硼氢化反应通过 BAr F 3促进的氢化物转移途径进行。根据我们的研究,在先前报道的条件(室温)下,无催化剂的亚胺硼氢化反应很难发生,建立了BH 3 ⋅ SMe 2催化的亚胺硼氢化反应。对于后来的硼氢化反应,我们的结果优选硼氢化/B-H/B-N σ-键复分解途径。
core/shell quantum dots (QDs) can be used as stable and highly active photoredoxcatalysts for efficient transferhydrogenation of imines to amines with thiophenol as a hydrogen atom donor. This reaction proceeds via a proton-coupled electron transfer (PCET) from the QDs conduction band to the protonated imine followed by hydrogen atom transfer from the thiophenol to the α-aminoalkyl radical. This precious