Li CO -passivated Li N with high stability is prepared by aging Li N powder in dry air, and is then used as an electrode additive for a Li(Li Ni Co Mn )O (LLMO) cathode material. The material shows a large irreversible capacity of 800 mA h g during the first charge, with the formation of a Li N intermediate product. Acting as a Li sacrificial salt for a LLMO(+)/graphite(-) Li-ion battery, 2 wt % Li N results in a 10 % increase in discharge capacity. The Li N intermediate product reacts with the electrolyte, forming a uniform and regular surface film on the cathode. Moreover, chemical bonding between LLMO and N improves the electrode stability, resulting in excellent electrochemical performance.
The construction of N-heterocyclic eight-membered rings remains a challenging due to unfavorable transannular strain. Herein, we report a Lu(OTf)3 catalyzed formal [4 +4] cycloaddition reaction of cyclobutane 1,1-diesters with anthranils...
An efficient Fe(OTf)3‐catalyzed nucleophilic addition of trimethylsilyl cyanide (TMSCN) to isochromene acetals has been achieved for the synthesis of 1‐cyano‐isochromenes. In the presence of 1–20 mol% Fe(OTf)3, a various of 1‐cyano‐isochromenes were obtained in good to excellent yields at room temperature. This transformation provides a simple and mild methodology for the synthesis of 1‐cyano‐isochromenes.
Correction for ‘Diastereoselective synthesis of tetrahydrobenzo[b]azocines by Lu(OTf)3-catalyzed [4+4] cycloaddition of donor–acceptor cyclobutanes with anthranils’ by Meifeng Hou et al., Chem. Commun., 2022, 58, 5865–5868, https://doi.org/10.1039/D2CC00829G.
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