Results 31 to 40 of about 20,875 (302)
CHIMIA, 1976 3,5-Bisdimethylamino-isoxazoles II are obtained easily from 1,3-dichloro-trimethinecyanine I and a water solution of hydroxylamine. Besides precedented photo-isomerization of 4-substituted isoxazoles IIb,c to azirines IIIb,c near quantitative thermal ...
G.J. de Voghel +3 more
doaj +1 more source
Symmetric 3,5-Pyrazole and Isoxazole Heterocycles Comprising a Bent Core Unit: Synthesis and Mesomorphic Characterisation [PDF]
, 2015 The synthesis and characterisation of some new liquid crystalline (LC) heteroaromatic compounds containing the five-membered pyrazole/isoxazole rings is reported. Some of the compounds exhibited enantiotropic LC properties.
Hariprasad, S., Srinivasa, H.T.
core +1 more source
Journal of Organic Chemistry, 2020 A continuous flow process is presented that directly converts isoxazoles into their oxazole counterparts via a photochemical transposition reaction.
Cormac Bracken, M. Baumann
semanticscholar +1 more source
Molecules, 2022 Amides, anhydrides, esters, and thioesters of 2H-azirine-2-carboxylic acids were prepared by a rapid procedure at room temperature involving FeCl2-catalyzed isomerization of 5-chloroisoxazoles to 2H-azirine-2-carbonyl chlorides, followed by reaction with
Anastasiya V. Agafonova +2 more
doaj +1 more source
Development of Simplified Heterocyclic Acetogenin Analogues as Potent and Selective Trypanosoma brucei Inhibitors [PDF]
, 2016 This work was funded by the Leverhulme Trust (GJF), and the Wellcome Trust (TKS, WT 093228).Neglected tropical diseases caused by parasitic infections are an on-going and increasing concern and burden to human and animal health, having the most ...
Alali +28 more
core +2 more sources
Organics, 2021 Conjugated azapolyenes (azabuta-1,3-dienes, aza-/diaza-/oxaza-/oxadiazahexa-1,3,5-trienes) are highly reactive in electrocyclization reactions, which makes them convenient precursors for the synthesis of a wide range of four-, five-, and six-membered ...
Nikolai V. Rostovskii +2 more
doaj +1 more source
Co-ingestion of amatoxins and isoxazoles-containing mushrooms and successful treatment: A case report [PDF]
, 2015 Mushroom poisonings occur when ingestion of wild mushrooms containing toxins takes place, placing the consumers at life-threatening risk. In the present case report, an unusual multiple poisoning with isoxazoles- and amatoxins-containing mushrooms in a ...
Andrade, Sérgio +10 more
core +1 more source
Isoxazole derivatives as new nitric oxide elicitors in plants
Beilstein Journal of Organic Chemistry, 2017 Several 3,5-disubstituted isoxazoles were obtained in good yields by regiospecific 1,3-dipolar cycloaddition reactions between aromatic nitrile oxides, generated in situ from the corresponding hydroxyimidoyl chlorides, with non-symmetrical activated ...
Anca Oancea +9 more
doaj +1 more source
Ruthenium-catalyzed asymmetric reduction of isoxazolium salts : access to optically active Δ4-isoxazolines [PDF]
, 2018 A tethered MsDPEN–ruthenium catalyst reduces a series of isoxazolium salts, affording optically active Δ4-isoxazolines in moderate to good yields and enantioenrichment. The redundancy of heating or high pressures allowed for chemoselective reduction with
Chew, Renta Jonathan, Wills, Martin
core +1 more source
One-step synthesis of differently bis-functionalized isoxazoles by cycloaddition of carbamoylnitrile oxide with β-keto esters [PDF]
, 2012 A new protocol for synthesizing different functionalized isoxazoles is provided. Carbamoylnitrile oxide generated from nitroisoxazolone underwent inverse electron-demand 1,3-dipolar cycloaddition with 1,3-dicarbonyl compounds in the presence of magnesium
975 +15 more
core +1 more source