Results 211 to 220 of about 8,940 (287)

Rational Design of Insecticidal Isoxazolines Containing Sulfonamide or Sulfinamide Structure as Antagonists of GABA Receptors with Reduced Toxicities to Honeybee and Zebrafish.

Journal of Agricultural and Food Chemistry, 2023
To develop highly effective, nontarget organism-friendly insecticides based on the isoxazoline scaffold, we rationally designed and synthesized 25 isoxazoline derivatives containing sulfonamides and sulfinamides. Their insecticidal activities against the
Shuai Yang, Jia-Quan Tang, Benjie Li, Guangkai Yao, Hongxiang Peng, Chunmei Pu, Chen Zhao, Hanhong Xu   +7 more
semanticscholar   +1 more source

Regioselective Cycloaddition of Alkenes with tert-butyl Nitrite: A Cascade Approach to the Formation of Δ2-Isoxazolines.

Journal of Organic Chemistry, 2023
A route for cycloaddition reaction of alkenes and tert-butyl nitrite to synthesize Δ2-isoxazolines has been developed. The overall process involves the formation of multiple chemical bonds without the use of a catalyst.
Yi Liu, Juan Cao, Mei Zhang, Zenghui Zhang, Chengcai Xia, Guili Guo, Fugang Wang   +6 more
semanticscholar   +1 more source

Anionic Chiral Co(III) Complexes Mediated Asymmetric Halocyclization─Synthesis of 5-Halomethyl Pyrazolines and Isoxazolines.

Organic Letters, 2021
An asymmetric synthesis of 5-halomethyl pyrazolines and isoxazolines which bear a tertiary stereocenter by catalytic halocyclization of β,γ-unsaturated hydrazones and ketoximes is described.
Xiao-Bao Wu, Quan Gao, Jun-Jie Fan, Zhenbo Zhao, Xue-Qin Tu, H. Cao, Jie Yu   +6 more
semanticscholar   +1 more source

Structure of a substituted isoxazoline [PDF]

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
openaire   +1 more source

TEMPO-Mediated Selective Synthesis of Isoxazolines, 5-Hydroxy-2-isoxazolines, and Isoxazoles via Aliphatic 𝜹-C(sp3)-H Bond Oxidation of Oximes.

Chemistry - An Asian Journal, 2021
Selective synthesis of three different bioactive heterocycles; isoxazolines, 5-hydroxy-2-isoxazolines and isoxazoles from the same starting material using TEMPO (2,2,6,6-Tetramethylpiperidin-1-oxyl) as a radical initiator is reported.
S. Mondal, Sourabh Biswas, K. Ghosh, D. Sureshkumar   +3 more
semanticscholar   +1 more source

Reductive Recyclization of sp3-Enriched Functionalized Isoxazolines into α-Hydroxy Lactams.

Journal of Organic Chemistry, 2021
An efficient synthesis (up to a 200 g scale) of 3-hydroxypyrrolidin-2-ones bearing alkyl substituents or functional groups at the C-5 position is described.
B. Chalyk, Andrii V Khutorianskyi, B. Vashchenko, Kyrylo Danyleiko, Anastasiia Grynyova, A. O. Osipova, A. Kozytskiy, Darya Syniuchenko, Anton Tsymbaliuk, K. Gavrilenko, A. Biitseva, D. Volochnyuk, I. Komarov, O. Grygorenko   +13 more
semanticscholar   +1 more source

An Efficient Synthesis of Isoxazoles and Isoxazolines [PDF]

HETEROCYCLES, 1985
AbstractDurch Umsetzung der, Hydroxamsäurechloride (III) mit Dipolarophilen wie (II), (IV) u.ä.
P. Caldirola, M. De Amici, C. De Micheli, P. Pevarello   +3 more
openaire   +2 more sources

Isoxazolin-5-one

Journal of the Chemical Society C: Organic, 1971
The reaction paths leading from ethyl propiolate to isoxazolin-5-one (II) and isoxazolin-3-one (III) are discussed and shown to be pH-dependent. The chemical and tautomeric properties of compound (II) are consistent with the known behaviour of its derivatives.
DE SARLO, FRANCESCO, G. DINI, P. LACRIMINI   +2 more
openaire   +3 more sources

Photochemistry of condensed isoxazolines

Monatshefte für Chemie Chemical Monthly, 1994
The condensed bridged isoxazolines4 are rearranged on irradiation with a low-pressure mercury lamp exclusively into condensed derivatives of tetrahydropyridine5. The selectivity of the rearrangement is due to a stabilization of the biradical8 by the overlap of the radical-electrons with π-electrons of the C=C double bond and the heterocyclic ring ...
Lubor Fišera, N. Pronayova, Vladimír Ondruš   +2 more
openaire   +2 more sources

Recent advances in the oxime-participating synthesis of isoxazolines.

Organic and biomolecular chemistry, 2020
Isoxazoline compounds are used as important intermediates for the synthesis of organic molecules, which are widely used in the chemical and life science industries. Oxime-participating cyclization has emerged as an efficient strategy for the construction
Jianhua Liao, Lu Ouyang, Qianru Jin, Jian Zhang, Renshi Luo   +4 more
semanticscholar   +1 more source