Selective Ruthenium-Catalyzed Transformation of Carbon Dioxide: An Alternative Approach toward Formaldehyde
作者:Max Siebert、Max Seibicke、Alexander F. Siegle、Sabrina Kräh、Oliver Trapp
DOI:10.1021/jacs.8b10233
日期:2019.1.9
one-step synthesis of a formaldehyde derivative starting fromcarbon dioxide and hydrogen gas utilizing a homogeneous ruthenium catalyst. Here, formaldehyde is obtained as dimethoxymethane, its dimethyl acetal, by selective reduction of carbon dioxide at moderate temperatures (90 °C) and partial pressures (90 bar H2/20 bar CO2) in the presence of methanol. Besides the desired product, only methyl formate
甲醛是许多工业过程的重要前体,每年在能量不利和原子效率低的工业过程中通过甲醇催化氧化产生数百万吨的规模。在这项工作中,我们提出了一种使用均相钌催化剂从二氧化碳和氢气开始的甲醛衍生物的高选择性一步合成。在这里,甲醛是通过在中等温度 (90 °C) 和分压 (90 bar H2/20 bar CO2) 下在甲醇存在下选择性还原二氧化碳而获得的二甲氧基甲烷,即其二甲基缩醛。除了所需的产物外,仅形成甲酸甲酯,可在连续的催化步骤中将其转化为二甲氧基甲烷。通过对催化体系的综合筛选,
Orthoamide, LXVII [1]. Bis(diformylamino)methan – ein neues leistungsfähiges Formylierungsmittel für aromatische Verbindungen / Orthoamides, LXVII [1]. Bis(diformylamino)methane – a New Efficient Formylating Reagent for Aromatic Compounds
作者:Willi Kantlehner、Ernst Anders、Jochen Mezger、Edmont V. Stoyanov、Ralf Kreß、Kurt Wermann、Wolfgang Frey、Helmar Görls
DOI:10.1515/znb-2008-0406
日期:2008.4.1
N-(chloromethyl)diformamide (12) in acetonitrile. The action of tris(chloromethyl) amine (18) on sodium diformamide (8) affords tris(diformylaminomethyl)amine (19). The constitution of the compounds 7, 11 and 19 was confirmed by crystal structure determination. The nature of the products from the reactions of aromatic compounds with 12 depends on the Lewis acid which is used as activator. Thus the N-benzylformamides
Über Tris(siloxymethyl)-, Tris(silylmercaptomethyl)- und Tris(silylmethyl)amine
作者:Walter Fink
DOI:10.1002/hlca.19730560333
日期:1973.4.25
the reaction of alkali salts of triorgano-silanols, -silanethiols and trimethylsilylmethanol as well as of triorganosilyllithium compounds with tris(chloromethyl)amine, silyl derivatives of tris(hydroxymethyl)-, tris(mercaptomethyl)- and tris(methyl)amine were prepared.
Ligand Tailoring Toward an Air-Stable Iron(V) Nitrido Complex
作者:Martin Keilwerth、Liam Grunwald、Weiqing Mao、Frank W. Heinemann、Jörg Sutter、Eckhard Bill、Karsten Meyer
DOI:10.1021/jacs.0c11141
日期:2021.1.27
new supporting ligand, tris-[2-(3-mesityl-imidazol-2-ylidene)methyl]amine (TIMMNMes), was developed and utilized to isolate an air-stable iron(V) complex bearing a terminal nitrido ligand, which was synthesized by one-electron oxidation from the iron(IV) precursor. Single-crystal X-ray diffraction analyses of both complexes reveal that the metal-centered oxidation is escorted by iron nitride (Fe≡N)