نتایج جستجو برای: amine solvent

تعداد نتایج: 74969  

Journal: :Nano Research 2022

The organization of nano-objects on macroscopic surfaces is a key challenge for the technological improvement and implementation nanotechnologies. For achieving operational functions, it required to assemble as controllable building blocks in highly ordered superstructures. Herein, we demonstrate growth self-organization metallic nanowires into hexagonal superlattices with tunable characteristi...

Journal: :Trends in chemistry 2021

Binary thiol-amine mixtures termed ‘alkahests’ possess high solvent power for an assortment of bulk solids, such as metals and metal chalcogenides, under mild conditions. The resulting inks are used in the solution deposition chalcogenide thin films a variety applications. molecular solutes from dissolution solid precursors affect film quality; it is therefore important to identify them effecti...

2017
Martin Scott Beatriz Blas Molinos Christian Westhues Giancarlo Franciò Walter Leitner

Aqueous biphasic systems were investigated for the production of formate-amine adducts by metal-catalyzed CO2 hydrogenation, including typical scrubbing solutions as feedstocks. Different hydrophobic organic solvents and ionic liquids could be employed as the stationary phase for cis-[Ru(dppm)2 Cl2 ] (dppm=bis-diphenylphosphinomethane) as prototypical catalyst without any modification or taggin...

Journal: :Journal of the American Chemical Society 2003
Hans J Reich Wayne S Goldenberg Aaron W Sanders Kevin L Jantzi C Christoph Tzschucke

Chelation and aggregation in phenyllithium reagents with potential 6- and 7-ring chelating amine (2, 3) and 5-, 6-, and 7-ring chelating ether (4, 5, 6) ortho substituents have been examined utilizing variable temperature (6)Li and (13)C NMR spectroscopy, (6)Li and (15)N isotope labeling, and the effects of solvent additives. The 5- and 6-ring ether chelates (4, 5) compete well with THF, but th...

Journal: :Tetrahedron 2022

The aza-Michael addition is a versatile reaction for the modification of ?,?-unsaturated carbonyl compounds with amines. reactivity dimethyl itaconate as bio-based Michael acceptor explored in this work. Through its reactions piperidine and dibutylamine, it was found that order can be changed by choice catalyst, solvent, or concentration amine reactant. effectiveness catalysts proportional to t...

2012
Yan Qi Yang Li Zheng-Ping Ma Qiu-Yun Chen

The title compound, [Cu(NCS)(2)(C(20)H(21)N(3))]·0.5CH(2)Cl(2), crystallized with two independent complex mol-ecules (A and B) in the asymmetric unit, accompanied by one dichloro-methane solvent mol-ecule. Each Cu(II) atom has a square-pyramidal geometry, being coordinated by five N atoms, three from the (4-methyl-benz-yl)bis-(pyridin-2-ylmeth-yl)amine ligand and two from the thio-cyanate ligan...

2012
Stefan Loos Wilhelm Seichter Edwin Weber Florian Mertens

The asymmetric unit of the title structure, C(8)H(7)NO(4)·2C(3)H(7)NO, contains one 2-amino-terephthalic acid and two N,N-dimethyl-formamide mol-ecules. Strong O-H⋯O hydrogen bonds between the acidic carb-oxy H atoms of 2-am-ino-terephthalic acid and the O atoms of both solvent mol-ecules form linear 1:2 complex units. One H atom of the amine group is involved in intra-molecular N-H⋯O hydrogen ...

2017
Ana Varela Lennart K B Garve Daniele Leonori Varinder K Aggarwal

Homologation of readily available α-boryl pyrrolidines with metal carbenoids is especially challenging even when good leaving groups (Cl- ) are employed. By performing a solvent switch from Et2 O to CHCl3 , efficient 1,2-metalate rearrangement of the intermediate boronate occurs with both halide and ester leaving groups. The methodology was used in the total synthesis of the Stemona alkaloid (-...

Journal: :The Journal of organic chemistry 2009
Mark J Thompson Beining Chen

A series of Ugi reactions has been successfully performed using ammonia as the amine component, employing 2,2,2-trifluoroethanol as a non-nucleophilic solvent in order to suppress known side reactions. Utilizing concentrated aqueous ammonia as a convenient source, this approach offered a simple, one-step assembly of Ugi adducts suitable for elaboration into a variety of 5-aminoazole compounds t...

Journal: :Dalton transactions 2015
Carol Hua Peter Turner Deanna M D'Alessandro

The incorporation of a redox-active tris(4-(pyridine-4-yl)phenyl)amine (NPy3) ligand into the Cu(I) coordination frameworks [CuNPy3NO3·solvent]n and [CuNPy3Cl·solvent]n has been shown to facilitate redox state switching in the materials. In both cases, the initial Cu(II) metal centre was reduced in situ during the solvothermal synthesis under relatively mild conditions where the use of chloride...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید