Results 181 to 190 of about 8,235 (246)

Structure of a norbornane‐fused pentacyclic isoxazoline [PDF]

Magnetic Resonance in Chemistry, 1990
AbstractThe steric structure of a pentacyclic adduct formed as a by‐product in a retro‐Diels‐Alder reaction was elucidated by 1H and 13C NMR spectroscopy, making use of double resonance and differential nuclear Overhauser effect measurements.
Sohár Pál, Kövesdi István, Frimpong-Manso Samuel, Stájer Géza, Bernáth Gábor   +4 more
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Synthesis, spectroscopic characterization (FT-IR, NMR) and DFT computational studies of new isoxazoline derived from acridone

, 2021
In this study, a new isoxazoline derived from acridone, 10‐{[3‐(4‐chlorophenyl)‐4,5‐dihydro‐1,2‐oxazol‐5 yl]methyl} acridone (3) was successfully synthesized and characterized by FT-IR, 1H NMR, 13C NMR and HRMS.
Mohammed Aarjane, S. Slassi, A. Ghaleb, A. Amine   +3 more
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Strong deshielding in aromatic isoxazolines

Magnetic Resonance in Chemistry, 2015
AbstractVery strong proton deshielding was found in di/tri‐aromatic isoxazoline regioisomers prepared from acridin‐4‐yl dipolarophiles and stable benzonitrile oxides (BNO). Three alkenes, (acridin‐4‐yl)‐CHCH‐R (R = COOCH3, Ph, and CONH2), reacted with three BNO dipoles (2,4,6‐trimethoxy, 2,4,6‐trimethyl, 2,6‐dichloro) to give pairs of target ...
Lucia, Ungvarská Maľučká, Mária, Vilková, Jozef, Kožíšek, Ján, Imrich   +3 more
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Construction of Cholesterol Oxime Ether Derivatives Containing Isoxazoline/Isoxazole Fragments and Their Agricultural Bioactive Properties/Control Efficiency.

Journal of Agricultural and Food Chemistry, 2021
To explore natural-product-based pesticidal candidates and high value-added application of cholesterol in agriculture, oximinoether derivatives of cholesterol-containing isoxazoline/isoxazole fragments (I-1∼I-16 and II-1∼II-18) were semiprepared by ...
Hui Xu, Kong-Yan Zhang, M. Lv, Meng Hao
semanticscholar   +1 more source

Rational Design and Synthesis of Isoxazoline Derivatives with Low Bee-Toxicity Based on Bee GABA Receptors.

Journal of Agricultural and Food Chemistry
The isoxazoline insecticide, such as fluralaner, exhibits strong insecticidal activity against pests while showing no cross-resistance. However, due to its toxicity to bees, the use of Fluralaner is restricted in veterinary antiparasitic applications ...
Jianrong Yang, Hong Tu, Bihong Tian, Zhichao Zhao, Ya Wang, Zhaokai Yang, Jian Wu   +6 more
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Solid-Phase Synthesis of Isoxazolines

Journal of Combinatorial Chemistry, 2002
The polymer-supported synthesis of isoxazolines is described via nitrile oxide intermediates, starting from primary nitroalkanes in a one-pot process.
S, Chandrasekhar, Abbas, Raza, M Venkat, Reddy, J S, Yadav   +3 more
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Isoxazoline

2005
The first part of the presented work deals with the enantioselective synthesis of isoxazolines. The synthetic approach involves the asymmetrically catalysed 1,3-dipolar cycloaddition of nitrones to acetylenes. Therefore electrondeficient mono- and bifunctionalysed as well as electronrich triplebond systems, in combination with electronrich and ...
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New Isoxazoline Cyclopropyl-Picolinamide Derivatives as Potential Insecticides.

Journal of Agricultural and Food Chemistry
Isoxazoline insecticides exhibit broad-spectrum insecticidal activity against insect pests. However, the high toxicity to honeybees limits their application in pest management. To explore reducing the toxicity of isoxazoline derivatives to bees, a series
Xiangmin Song, Haojing Wang, Wei Zou, He Hong, Yongchao Gao, Chen Zhao, Hanhong Xu, Guangkai Yao   +7 more
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Discovery of new N-Phenylamide Isoxazoline derivatives with high insecticidal activity and reduced honeybee toxicity.

Pesticide Biochemistry and Physiology
Isoxazoline is a novel structure with strong potential for controlling agricultural insect pests, but its high toxicity to honeybees limits its development in agriculture.
Yongchao Gao, Xiangmin Song, Tianhao Jia, Chen Zhao, Guangkai Yao, Hanhong Xu   +5 more
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Structure of a substituted isoxazoline

Acta Crystallographica Section C Crystal Structure Communications, 1987
L'oxyde de cyano-3 tetramethyl-4,4,5,5 dihydro-4,5 isoxazole, C 8 H 12 N 2 O 2 , cristallise dans le systeme orthorhombique, groupe Pna2 1 et sa structure est affinee jusqu'a R=0,065.
C. George, R. Gilardi
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