化学
脱氢
催化作用
酰胺
亚胺
氧气
钌
串联
选择性
组合化学
光化学
有机化学
复合材料
材料科学
作者
Xufeng Nie,Mei Wang,Yihua Fu,Jiaqi Xu,Xueli Zheng,Hua Chen,Zhishan Su,Haiyan Fu,Ruixiang Li
标识
DOI:10.1016/j.jcat.2022.12.001
摘要
We have developed a new catalytic system for preparing amides by tandem acceptorless dehydrogenation of amines and oxygen transfer of DMSO. This system shows very good catalytic activity and selectivity, a variety of primary amines and even diamines are converted into the corresponding amides in good to quantitative yields (>99 %). The unprecedented catalytic performance of this binuclear ruthenium complex was attributed to a unique chelating model wherein one Ru center combines with N atom of RCHNH produced from the dehydrogenation of RCH2NH2 and the other co-ordinates with the S atom of DMSO, thus bringing the DMSO and imine molecules into proximate to enhance the efficiency of the oxygen transfer from DMSO via a six-membered ring transition state. The mechanism study indicated that the oxygen in the product amides came from DMSO and CH bond cleavage in DMSO was the rate determining step.
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