Topic
Morpholine
About: Morpholine is a research topic. Over the lifetime, 5411 publications have been published within this topic receiving 51063 citations. The topic is also known as: diethylene imidoxide & diethylene oximide.
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TL;DR: The triplet quantum yield of SiPc unit in the supra-molecule is unexpectedly high, and the predominant spectral signal in microsecond-scale is triplet-triplet (T(1)-T(n)) absorption.
Abstract: Silicon phthalocyanine (SiPc) with two axially attached morpholine (MP) units was prepared, and its photophysics was studied by laser flash photolysis, steady state and time-resolved fluorescence m...
26 citations
TL;DR: Morpholine was formylated with a TON value of up to 18000, which is the highest TON for the hydrogenation of CO2 to formamides using any abundant-metal-phosphine complex, and with an appropriate selection of catalyst and reaction conditions, >90-98% conversion of amine to formamide could be achieved.
Abstract: Catalytic hydrogenation of CO2 is an efficient and selective way to prepare formic acid derivatives, but most of the highly active catalysts used for this purpose require precious metals. In this study, in situ abundant-metal complexes have been evaluated as potential catalysts for CO2 hydrogenation to prepare formamides, including N-formylmorpholine, 2-ethylhexylformamide, and dimethylformamide, from the corresponding amines. From these initial screening results, the most active catalysts for these reactions were found to be MX2/dmpe in situ catalysts (M = Fe(II), Ni(II); X = Cl–, CH3CO2–, acac–; dmpe = 1,2-bis(dimethylphosphino)ethane) in DMSO. The optimal reaction conditions were found to be 100–135 °C and a total pressure of 100 bar. Morpholine was formylated with a TON value of up to 18000, which is the highest TON for the hydrogenation of CO2 to formamides using any abundant-metal–phosphine complex. With an appropriate selection of catalyst and reaction conditions, >90–98% conversion of amine to for...
26 citations
TL;DR: In this article, the authors showed that 1,1,2-trifluoro-2,2,hexafluoro 2,2.5,7,8-tetrahydrofuran can be converted to an N,N-dialkylamide of α-substituted fluoroacetic acid.
26 citations
TL;DR: The use of disulfonylamines as counter-ions allows the synthesis of stable ionic gold(I) complexes with the amine ligands cyclohexylamine, benzylamine and 3-iodobenzenylamine as mentioned in this paper.
Abstract: The use of disulfonylamines as counter-ions allows the synthesis of stable ionic gold(I) complexes with the amine ligands cyclohexylamine, benzylamine, 3-iodobenzylamine, morpholine, pyrrolidine, and piperidine There is a considerable increase in stability for the morpholine complex compared to the previously synthesised chloro derivative; the benzylamine derivatives displayed better solubility and crystallinity than their chloro analogues The use of silver disulfonylamine derivatives in the syntheses led in two cases to the incorporation of silver into the products, with concomitantly poor yields Crystal structure determinations of eight complexes revealed, as expected, extensive systems of N−H···O hydrogen bonds Amines with NH functions tend to form hydrogen-bonded chain motifs, those with NH2 as donor group form layers of linked ring patterns It thus seems that the packing can more easily be classified in terms of influence of the cation than of the anion Some C−H···O hydrogen bonds were also observed, but play a less important role Aurophilic contacts were not observed, although one mixed gold/silver complex displayed short Au···Ag contacts Of the two compounds containing iodine, only one showed short I···I contacts
26 citations
TL;DR: In this paper, a theoretical analysis of photochromic-crown ether and its cation complexes was conducted to determine the minimum energy structure of benzochromene complexes in gas phase as well as in acetonitrile as solvent.
26 citations