Hebei Key Laboratory of Organic Functional Molecules, The College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, People's Republic of China.
Dalton Trans. 2020 Mar 21;49(11):3480-3487. doi: 10.1039/d0dt00045k. Epub 2020 Feb 27.
Four trinuclear ruthenium carbonyl clusters, (6-BrPyCHRO)Ru(CO) (R = 4-OCHCH, 1a; R = 4-BrCH, 1b) and (2-OCH-HC[double bond, length as m-dash]N-CHR)Ru(CO) (R = 4-OCH, 2a; R = 4-Br, 2b), were synthesized from the reactions of Ru(CO) with the corresponding N,O-bidentate ligands (two pyridyl alcohols and two Schiff bases) respectively in a ratio of 1 : 2. Three new complexes 1b, 2a and 2b have been fully characterized by elemental analysis, FT-IR, NMR and X-ray crystallography. The catalytic activity of these ruthenium complexes for the aerobic oxidation of primary benzylic amines to amides and nitriles in the presence of t-BuOK was investigated, of which the Schiff base complex 2a was found to exhibit the highest activity.
四个三核钌羰基簇合物，(6-BrPyCHRO)Ru(CO)（R = 4-OCHCH，1a；R = 4-BrCH，1b）和(2-OCH-HC[双键，长度为破折号]N-CHR)Ru(CO)（R = 4-OCH，2a；R = 4-Br，2b），是通过 Ru(CO) 与相应的 N,O-双齿配体（两个吡啶醇和两个席夫碱）以 1:2 的比例反应合成的。三个新的配合物 1b、2a 和 2b 通过元素分析、FT-IR、NMR 和 X 射线晶体学得到了充分的表征。研究了这些钌配合物在 t-BuOK 存在下有氧氧化伯苄胺为酰胺和腈的催化活性，其中席夫碱配合物 2a 表现出最高的活性。
