Ruthenium(II) hydride complexes bearing a pyrazolyl-(2-indol-1-yl)-pyridine ligand were synthesized and structurally characterized by NMR analysis and X-ray single crystal crystallographic determinations. These complexes efficiently catalyzed acceptorless dehydrogenation of N-heterocycles and secondary alcohols, respectively, exhibiting highly catalytic activity with a broad substrate scope. The present work has established a strategy to construct highly active transition metal complex catalysts and provides an atom-economical and environmentally benign protocol for the synthesis of aromatic N-heterocyclic compounds and ketones.

中文翻译：

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带有吡唑基-吲哚基-吡啶配体的Ru（II）-NNC配合物对N-杂环和仲醇的无受体脱氢

合成了带有吡唑基-（2-吲哚-1-基）-吡啶配体的氢化钌（II）配合物，并通过NMR分析和X射线单晶晶体学测定对其结构进行了表征。这些配合物分别有效地催化了N-杂环和仲醇的无受体脱氢，表现出高催化活性，具有广泛的底物范围。本工作已经建立了构造高活性过渡金属配合物催化剂的策略，并为合成芳族N-杂环化合物和酮提供了原子经济和环境友好的方案。