Results 21 to 30 of about 3,033,277 (268)

Isoxazolodihydropyridinones: 1,3-dipolar cycloaddition of nitrile oxides onto 2,4-dioxopiperidines. [PDF]

ACS Comb Sci, 2012
Coffman KC, Hartley TP, Dallas JL, Kurth MJ.   +3 more
europepmc   +2 more sources

Ultrasound-assisted one-pot three-component synthesis of new isoxazolines bearing sulfonamides and their evaluation against hematological malignancies

Ultrasonics Sonochemistry, 2021
In the present study, following a one-pot two-step protocol, we have synthesized novel sulfonamides-isoxazolines hybrids (3a-r) via a highly regioselective 1,3-dipolar cycloaddition. The present methodology capitalized on trichloroisocyanuric acid (TCCA)
Aicha Talha, Cécile Favreau, Maxence Bourgoin, Guillaume Robert, Patrick Auberger, Lahcen EL Ammari, Mohamed Saadi, Rachid Benhida, Anthony R. Martin, Khalid Bougrin   +9 more
doaj   +1 more source

Synthesis of isoxazoles by hypervalent iodine-induced cycloaddition of nitrile oxides to alkynes

Chemical Communications, 2011
Anup M. Jawalekar, Erik Reubsaet, Floris P. J. T. Rutjes, Floris L. van Delft   +3 more
openalex   +3 more sources

Studies on the [2+3] cycloaddition reaction of nitrile oxides to abietic acid esters [PDF]

Journal of the Serbian Chemical Society, 2019
[2+3] Dipolar cycloadditions of aromatic nitrile oxides to abietic acid esters were investigated. The reactions showed complete site selectivity and regioselectivity, while the stereoselectivity depended on the structures of the dipolarophiles.
Gucma Mirosław, Gołębiewski Marek W., Żelechowski Krzysztof, Krawczyk Maria   +3 more
doaj   +1 more source

Mechanochemical Dimerization of Aldoximes to Furoxans

Molecules, 2022
Solvent-free mechanical milling is a new, environmentally friendly and cost-effective technology that is now widely used in the field of organic synthesis.
Run-Kai Fang, Kuan Chen, Chuang Niu, Guan-Wu Wang   +3 more
doaj   +1 more source

Oxidize Amines to Nitrile Oxides: One Type of Amine Oxidation and Its Application to Directly Construct Isoxazoles and Isoxazolines.

Journal of Organic Chemistry, 2020
A facile oxidative heterocyclization of commercially available amines and tert-butyl nitrite with alkynes or alkenes leading to isoxazoles or isoxazolines is described.
Xiao-Wei Zhang, Xiao-Lin He, Nannan Yan, Hong-Xing Zheng, Xiangguo Hu   +4 more
semanticscholar   +1 more source

One Step Regioselective Synthesis of 5-Aminoisoxazoles from Nitrile Oxides and α-Cyanoenamines

Molecules, 2004
The 1,3-dipolar cycloaddition of nitrile oxides to 1-cyanoenamines gives 5-aminoisoxazoles regioselectively. Moderate to good yields could be obtained depending on the method used to generate the nitrile oxides. The intermediate isoxazolines could not be
Aïcha Derdour, Michel Vaultier, Amar Saad   +2 more
doaj   +1 more source

Selection of elastomeric membranes for the removal of volatile organics from water [PDF]

, 1993
A wide range of homogeneous elastomeric membranes has been prepared using dicumylperoxide as a general cross-linking agent. The membranes have been used for both equilibrium sorption measurements and steady-state pervaporation experiments to study ...
Mulder, M.H.V., Nijhuis, H.H., Nijhuis, H.H., Smolders, C.A., Smolders, C.A.   +4 more
core   +2 more sources

Orthogonal, metal-free surface modification by strain-promoted azide–alkyne and nitrile oxide–alkene/alkyne cycloadditions [PDF]

, 2012
In this article we present a fast and efficient methodology for biochemical surface patterning under extremely mild conditions. Micropatterned azide/benzaldoxime-surfaces were prepared by microcontact printing of a heterobifunctional cyclooctyne oxime ...
Arlinghaus, Heinrich F, Burley, Glenn A, Ravoo, Bart Jan, Rinnen, Stefan, Schulz, Christian, Singh, Ishwar, Wendeln, Christian   +6 more
core   +1 more source

Reactions of 5-Aroylmethylene-3-benzyl-4-oxo-2-thioxo-1,3-thiazolidines with Nitrile Oxides

Molecules, 2001
E,Z-5-Aroylmethylene-3-benzyl-4-oxo-2-thioxo-1,3-thiazolidines (3a-c) react with 4-methoxy and 4-chlorophenylnitrile oxides (4a and b) in pyridine solution to afford one or more of the following compounds: Z-3, Z-2,4-dioxo analogues 5 and 3,6-diaryl-1,4 ...
Ahmed S. A. Youssef, Kamal A. Kandeel
doaj   +1 more source