87383-52-6Relevant academic research and scientific papers
Isostructurality of quinoxaline crystal phases: The interplay of weak hydrogen bonds and halogen bonding
Bowen, Richard D.,Fenwick, Nathan W.,Saidykhan, Amie,Seaton, Colin C.,Telford, Richard
, p. 7108 - 7117 (2021/10/26)
Tailoring the physical properties of molecular crystals though the construction of solid solutions requires the existence of isostructural crystals. Simple substitutions of a given molecular framework can give a range of different crystal structures. A se
Synthesis method of quinoxaline heterocyclic derivative
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Paragraph 0058-0061, (2020/05/30)
The invention discloses a synthesis method of a quinoxaline heterocyclic derivative. An intermolecular redox reaction and a condensation cyclization reaction are carried out on an o-nitroaniline compound and an o-diol compound under the action of a water-soluble alkali to prepare the quinoxaline heterocyclic derivative in one step. Expensive transition metal catalysts and ligands do not need to beused, the water-soluble alkali is used as an accelerant and can be removed in a water washing manner, so that the product has no transition metal residue, the product is easy to separate, the recovery rate is high, and the method is simple in condition, easy to operate and low in equipment requirement; and the water-soluble alkali is used as the accelerant, so the unique byproduct is water, the atom economy is high, and the method has good research and industrial application prospects.
Assisted tandem catalytic cross metathesis-oxidation: In one flask from styrenes to 1,2-diketones and further to quinoxalines
Schmidt, Bernd,Krehl, Stefan,Hauke, Sylvia
, p. 5427 - 5435 (2013/07/25)
1,2-Diketones were synthesized from styrenes by combining a cross metathesis and a Ru-catalyzed alkene oxidation to an assisted tandem catalytic sequence. The synthesis relies on the use of just one metathesis precatalyst, which was in situ converted to the oxidation catalyst by addition of an alkyl hydroperoxide as a chemical trigger and oxidant. The one-flask sequence can be extended beyond 1,2-diketones to quinoxalines, by condensation of the oxidation products with ortho-phenylenediamine.
New Helical Molecules, IX. Syntheses, Enantiomer Separations, Circular Dichroism, Racemization Barriers, X-Ray Analyses, and Absolute Conformations of New, Easily Available Arenicenes
Voegtle, Fritz,Palmer, Michael,Fritz, Edmund,Lehmann, Ulrich,Meurer, Kurt,et al.
, p. 3112 - 3124 (2007/10/02)
The new helical compounds 1 - 3 have been synthesized. 1 and 2 are separated into the enantiomers by chromatography on cellulose triacetate.The rotatory powers are high: e.g., 20436 = 2096 for 1.The racemization /ring inversion ba
