Results 51 to 60 of about 3,055 (208)

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, Adailton J. Bortoluzzi, Aloir A. Merlo   +2 more
doaj   +1 more source

Practices employed by veterinary practitioners for controlling canine gastrointestinal helminths and ectoparasites

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, Isabella Chaves Sousa, Caio Pavão Tavares, Naylene Carvalho Silva, Hermes Ribeiro Luz, Matheus Nobate Gomes, Neil Sargison, Livio Martins Costa-Junior   +7 more
doaj   +1 more source

Asymmetric 1,3-dipolar cycloadditions of acrylamides [PDF]

, 2009
This critical review, which is relevant to researchers in synthetic organic chemistry, focuses on asymmetric 1,3-dipolar cycloadditions with acrylamides.
Kissane, Marie, Maguire, Anita R.
core   +1 more source

Efficacy of oral sarolaner for the treatment of generalized demodicosis in dogs

Brazilian Journal of Veterinary Medicine, 2019
The aim of this study was to report the treatment efficacy of generalized demodicosis with oral sarolaner in dogs. Twenty-seven dogs diagnosed with generalized demodicosis were treated with oral sarolanerat a dose of 2.0 mg/kg every 30 days.
Flavia Clare Goulart Carvalho, Natália Lôres Lopes, Marília Alves Machado, Alexandre Merlo, Julio Israel Fernandes   +4 more
doaj   +1 more source

Monosubstituted N‐Arylhydroxylamine Chemistry: Integrating Contemporary Synthetic Approaches for the Efficient Construction of Diverse Heterocyclic Scaffolds

Chemistry – A European Journal, EarlyView.
Monosubstituted N‐arylhydroxylamines represent a unique subclass of hydroxylamines that act as pivotal intermediates in redox transformations and as versatile platforms for further synthetic transformations. They serve as key building blocks in the synthesis of architecturally complex heterocycles and other valuable organic compounds.
Michael G. Kallitsakis, Kyriakos D. Nikopoulos, Ioannis N. Lykakis   +2 more
wiley   +1 more source

Oxime radicals: generation, properties and application in organic synthesis

Beilstein Journal of Organic Chemistry, 2020
N-Oxyl radicals (compounds with an N–O• fragment) represent one of the richest families of stable and persistent organic radicals with applications ranging from catalysis of selective oxidation processes and mechanistic studies to production of polymers,
Igor B. Krylov, Stanislav A. Paveliev, Alexander S. Budnikov, Alexander O. Terent’ev   +3 more
doaj   +1 more source

1,1‐Disubstituted Vinylbromides: Versatile Building Blocks for the Synthesis of Nitrogen‐Containing Heterocycles

European Journal of Organic Chemistry, EarlyView.
1,1‐Disubstituted vinylbromides are key intermediates for constructing nitrogen‐containing heterocycles. This review provides an overview of the synthetic applications of 1,1‐disubstituted vinylbromides and summarizes recent developments in reaction methodologies, mechanistic insights, and the structural diversity of N‐heterocyclic compounds accessible
Anne Westermeyer, Jun Fang, Chonghuo Liu, Guillaume Lefèvre, Gérard Guillamot, Phannarath Phansavath, Virginie Ratovelomanana‐Vidal   +6 more
wiley   +1 more source

Susceptibility of Phthorimaea absoluta (Meyrick) (Lepidoptera: Gelechiidae) to novel and established insecticides in Brazil: resistance survey, baseline, and implications for management

Pest Management Science, EarlyView.
Baseline susceptibility of Phthorimaea absoluta to novel insecticides isocycloseram and tolfenpyrad was established in Brazil. Diagnostic doses were proposed for early resistance detection. Early tolfenpyrad tolerance and abamectin‐driven cross‐tolerance to isocycloseram via oxidases highlight cross‐resistance risks, emphasizing the need for routine ...
Vitor Quintela, Teófilo P Langa, José VCR Dantas, Marcos de Oliveira, Herbert AA Siqueira   +4 more
wiley   +1 more source

Cycloaddition reactions of nitrosoalkenes, azoalkenes and nitrile oxides mediated by hydrotalcite [PDF]

, 2012
Mg:Al 3:1 hydrotalcite (Ht), used in catalytic quantities, promotes the generation of nitrosoalkenes, azoalkenes and nitrile oxides. These can be intercepted in situ by heterocycles and olefins in [4+2] and [3+2] cycloaddition reactions, producing ...
Lemos, A., Lourenço, J. P.
core  

Systemic insecticide treatment of the canine reservoir of Trypanosoma cruzi induces high levels of lethality in Triatoma infestans, a principal vector of Chagas disease [PDF]

, 2017
BACKGROUND: Despite large-scale reductions in Chagas disease prevalence across Central and South America, Trypanosoma cruzi infection remains a considerable public health problem in the Gran Chaco region
Bern, Caryn, Cahuasiri, Thalia, Canaviri, Ruben J., Courtenay, Orin, Gomez, Sonia A., Goncalves, Raquel, Guibarra, Alvaro, Herbas, Gladys, Loza, Ariel, Luck, Laura, Messenger, Louisa A., Pereira, Juan A., Picado de Puig, Albert, Talaga, Adrianna   +13 more
core   +3 more sources