Results 41 to 50 of about 5,382 (243)
PLoS Pathogens, 2021 Control of infestation by cosmopolitan lice (Pediculus humanus) is increasingly difficult due to the transmission of parasites resistant to pediculicides.
Nicolas Lamassiaude +7 more
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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 +2 more
doaj +1 more source
Synthesis, Antimicrobial and Antioxidant Activities of 2-Isoxazoline Derivatives
Molecules, 2020 A series of derivatives of trans-3-(2,4,6-trimethoxyphenyl)4,5-dihydroisoxazolo-4,5-bis[carbonyl-(4′phenyl)thiosemicarbazide (9) and of trans-3-(2,4,6-trimethoxyphenyl)-4,5-dihydro isoxazolo-4,5-bis(aroylcarbohydrazide) (10a–c) were synthesized from ...
Asma Alshamari +4 more
doaj +1 more source
An anomalous hydration/dehydration sequence for the mild generation of a nitrile oxide [PDF]
, 2011 A nitrile oxide containing a carbamoyl group is readily generated upon the treatment of 2-methyl-4-nitro-3-isoxazolin-5(2H)-one with water under mild reaction conditions, even in the absence of special reagents.
884 +19 more
core +2 more sources
Gold-catalyzed propargylic substitutions: Scope and synthetic developments
Beilstein Journal of Organic Chemistry, 2011 This personal account summarizes our recent developments in gold-catalyzed direct substitutions on propargylic (allylic, benzylic) alcohols, with various nucleophiles (and bi-nucleophiles) based on the σ- and/or π-acidity of gold(III) complexes ...
Olivier Debleds +3 more
doaj +1 more source
Recent Advancements in the Control of Cat Fleas
Insects, 2020 With the advent of imidacloprid and fipronil spot-on treatments and the oral ingestion of lufenuron, the strategies and methods to control cat fleas dramatically changed during the last 25 years.
Michael K. Rust
doaj +1 more source
Revista Brasileira de Parasitologia Veterinária, 2021 The present study attempted to evaluate the practical experience and methods employed by Brazilian veterinary practitioners for control of parasites. Twenty-one questions were asked of 403 veterinary practitioners based in different climatic zones with ...
Tássia Lopes do Vale +7 more
doaj +1 more source
Advanced Science, EarlyView.We have developed a Pd‐catalyzed oxidative cyclopropanation of 1,n‐enynes employing cyclic diacyl peroxides as bifunctional reagents that serve as both tether‐tunable oxidants and spatially controlled dicarboxylate anions. ABSTRACT Bicyclo[n.1.0]alkanes are highly valuable scaffolds in drug discovery and synthetic chemistry.
Ting Yuan, Lei Shi
wiley +1 more source
Iodoarene-catalyzed cyclizations of N-propargylamides and β-amidoketones: synthesis of 2-oxazolines
Beilstein Journal of Organic Chemistry, 2017 Two complementary iodoarene-catalyzed methods for the preparation of 2-oxazolines are presented. The first involves the cyclization of N-propargylamides and the second involves the cyclization of β-amidoketones.
Somaia Kamouka, Wesley J. Moran
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Crystal structure of 5-(4-tert-butoxyphenyl)-3-(4-n-octyloxyphenyl)-4,5-dihydroisoxazole
Acta Crystallographica Section E: Crystallographic Communications, 2019 The molecule of the title compound, C27H37NO3, was prepared by [3 + 2] 1,3-dipolar cycloaddition of 4-n-octylphenylnitrile oxide and 4-tert-butoxystyrene, the latter compound being a very useful intermediate to the synthesis of liquid-crystalline ...
Eric S. Sales +2 more
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