Results 121 to 130 of about 19,238 (306)

1-Bromoethene-1-sulfonyl fluoride (1-Br-ESF), a new SuFEx clickable reagent, and its application for regioselective construction of 5-sulfonylfluoro isoxazoles.

open access: yesChemical Communications, 2018
A new fluorosulfonylation reagent 1-bromoethene-1-sulfonyl fluoride was developed (1-Br-ESF). This unique reagent possesses three addressable handles (vinyl, bromide, and sulfonyl fluoride) and has great potential to function as a tris-electrophile and ...
Jing Leng, Hua-Li Qin
semanticscholar   +1 more source

Molecular Structure of Heterocycles: 6. Solvent Effects on the 17O Nmr Chemical Shifts of 5-Trichloromethylisoxazoles

open access: yesJournal of the Brazilian Chemical Society, 2001
A multilinear-regression analysis using the Kamlet-Abboud-Taft (KAT) solvatochromic parameters in order to elucidate and quantify the solvent effects on the 17O chemical shifts of three 5-trichloromethylisoxazoles [(1a) non-, (1b) 3-methyl- and (1c) 4 ...
Martins Marcos A. P.   +7 more
doaj  

Palladium-catalyzed 2,5-diheteroarylation of 2,5-dibromothiophene derivatives

open access: yesBeilstein Journal of Organic Chemistry, 2014
Conditions allowing the one pot 2,5-diheteroarylation of 2,5-dibromothiophene derivatives in the presence of palladium catalysts are reported.
Fatma Belkessam   +4 more
doaj   +1 more source

Direct ring fluorination of 3-substituted 5-(1,3-dioxane) acetal isoxazoles: application to the formal synthesis of a bioactive fluorinated isoxazole

open access: yesComptes Rendus. Chimie
The access to a novel variety of 4-fluorinated isoxazoles bearing an aryl or alkyl group at the C-3 position and an acetal fragment at the C-5 position has been achieved through a direct fluorination using N-fluorobenzenesulfonimide (NFSI) with yields up
Bacheley, Lucas   +3 more
doaj   +1 more source

Sintesis de derivados isoxazolil quinolinicos y su actividad biologica [PDF]

open access: yes, 2009
48 p.Sabidas, son las variadas propiedades que presentan tanto los isoxazoles, como las quinolinas en varios ámbitos hoy en día; Presentan grandes actividades a nivel de antiagregante plaquetario, antifúngicos, inhibidores de enzimas, etc.
Acuna Martinez, Sara   +1 more
core  

Home - About - Disclaimer - Privacy