3299-64-7Relevant articles and documents
Visible-Light-Induced Palladium-Catalyzed Dehydrogenative Carbonylation of Amines to Oxalamides
Meyer, Tim,Rabeah, Jabor,Brückner, Angelika,Wu, Xiao-Feng
supporting information, p. 5642 - 5647 (2021/03/09)
The palladium-catalyzed oxidative carbonylation of amines toward the synthesis of oxalamides has been established around 30 years ago and it usually needs the presence of (over)stoichiometric amounts of oxidant. In this work, the first transformation of this type in which the oxidant was replaced by visible light is described. The new approach uses a simple robust Pd complex, which can even be partially recycled. A mechanistic reason is provided and supported by control experiments and EPR studies, showing that PdI was formed and Pd0 was the active species. Both nitrogen- and the intermediate acyl radical can be detected. Moreover, the formation of hydrogen was confirmed by gas GC.
Tuning Synergistic Effect of Au-Pd Bimetallic Nanocatalyst for Aerobic Oxidative Carbonylation of Amines
Duan, Hui,Zeng, Yongfei,Yao, Xin,Xing, Pengyao,Liu, Jia,Zhao, Yanli
, p. 3671 - 3677 (2017/05/01)
The activation and utilization of carbon monoxide is of crucial importance to C1 chemistry. Various catalytic transformation processes have been developed and studied in the last century, and oxidative carbonylation of amines is one of them. Catalysts that have been identified to date for the oxidative carbonylation of amines generally show relatively low activity and/or selectivity. Herein, a metal-organic framework (MOF), i.e., MOF-253 prepared from AlCl3·6H2O and 2,2′-bipyridine-5,5′-dicarboxylic acid, was employed as a support of gold-palladium bimetallic nanoparticles (Au-Pd/MOF) for the oxidative carbonylation of amines under mild conditions. Compared to palladium or gold monometallic catalysts, higher catalytic activity (turnover frequency up to 2573 h-1) and selectivity in the carbonylation of amines were achieved by Au-Pd/MOF bimetallic catalysts through adjusting the molar ratio of gold and palladium within the framework. A breathing effect of Au-Pd/MOF in the catalytic process was further observed from kinetic profiles and powder X-ray diffraction for the first time.
CO-use CO2 Method for synthesizing N, N - dialkyl oxalate
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Paragraph 0042; 0043; 0044; 0045; 0046, (2016/11/17)
The invention provides a method for synthesizing N,N-dialkyl oxamide by using CO2. According to the method, in an organic or inorganic solvent, one-step synthetic reaction is performed on the CO2 and organic amine to synthesize the N,N-dialkyl oxamide, with N,N-dialkyl urea and water as byproducts, in the presence of a certain catalyst and under a certain reaction condition that the reaction pressure is 10-80atm and the reaction temperature is 100-200 DEG C. The invention discloses the method for synthesizing the N,N-dialkyl oxamide by using the CO2. According to the method, a valuable and toxic metal catalyst and a toxic and explosive gas in the prior art are not used, and reactants, products, and added components in a system are safe and environment-friendly; the yield is considerable; technically, an improvement room exists; a safe and environment-friendly new method is provided for preparing the N,N-dialkyl oxamide.