7710-44-3Relevant academic research and scientific papers
Microwave-assisted 1,3-dipolar cycloaddition reactions of nitrilimines and nitrile oxides
Kaddar, Hafida,Hamelin, Jack,Benhaoua, Hadj
, p. 718 - 719 (1999)
The 1,3-dipolar activity of hydrazonoyl chlorides and oxime chlorides over alumina with various alkenes and alkynes under microwave irradiation is studied; a comparative study between dry media conditions and the procedure in homogeneous solution under microwave and classical heating is described.
α-Nitrosostyrenes as Three-Atom Units for the (3+1) Cyclization Reaction: Facile Access to 2,3-Dihydrodiazete N-Oxides and Their Diversified Synthetic Conversions
Shen, Li-Wen,Wang, Zhen-Hua,You, Yong,Yuan, Wei-Cheng,Zhao, Jian-Qiang,Zhou, Ming-Qiang
, p. 1094 - 1099 (2022/02/10)
An unprecedented (3+1) cyclization of α-nitrosostyrenes, generated in situ from α-bromooximes, and N-tosyloxycarbamates was developed, which enables the synthesis of a range of structurally unique and hitherto unexplored 2,3-dihydrodiazete N-oxides in mod
Heterocycle-Heterocycle Strategy for 4,5-Disubstituted Pyrrolidine 2,3-Diones: Reductive Rearrangement Approach from Isoxazole Esters
Kamath, Prashantha,Jadhav, Vaibhav,Lal, Mukul
supporting information, p. 1146 - 1150 (2021/05/25)
The work demonstrates the heterocycle-heterocycle interconversion strategy to access 4,5-disubstituted 3-hydroxy-2-pyrrolidinone in moderate to good yields (50-80%). The approach has a distinct advantage over a multicomponent reaction approach as it allow
Copper nitrate-mediated synthesis of 3-aryl isoxazolines and isoxazoles from olefinic azlactones
Lin, Yifan,Zhang, Ke,Gao, Mingchun,Jiang, Zheyi,Liu, Jiajie,Ma, Yurui,Wang, Haoyu,Tan, Qitao,Xiao, Junjie,Xu, Bin
supporting information, p. 5509 - 5513 (2019/06/14)
A copper nitrate-mediated [2 + 2 + 1] cycloaddition reaction was developed for the expedient synthesis of pharmacologically interesting 3-aryl substituted isoxazolines and isoxazoles through CC bond cleavage. Copper nitrate is employed as a reaction promoter and precursor of nitrile oxides. The given approach features a new mode of cycloaddition from olefinic azlactones, copper nitrate and unsaturated compounds with wide substrate scope, good functional group tolerance and operational simplicity.
HETEROCYCLIC COMPOUNDS WITH MICROBIOCIDAL PROPERTIES
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Page/Page column 103, (2018/11/22)
The present disclosure relates to a compound of Formula I, wherein the substituents T, A, W, R2, n, Z, G, Z1 and J are as defined in the description.
Synthesis of five-membered cyclic nitrones based on the Lewis acid-catalysed [3+2]-annulation reaction of donor-acceptor cyclopropanes with 1,4,2-dioxazoles
Wang, Zhe-Hao,Zhang, Huan-Huan,Xu, Peng-Fei,Luo, Yong-Chun
, p. 10128 - 10131 (2018/09/13)
A novel synthesis of five-membered cyclic nitrones has been developed based on the Lewis acid-catalysed [3+2]-annulation reaction of D-A cyclopropanes with 1,4,2-dioxazoles. Broad substrate scope and generally good yield make this reaction useful in the p
Hypervalent iodine mediated synthesis of di- and tri-substituted isoxazoles via [3+2] cycloaddition of nitrile oxides
Singhal, Ankur,Parumala, Santosh Kumar Reddy,Sharma, Arun,Peddinti, Rama Krishna
supporting information, p. 719 - 722 (2016/02/09)
An efficient and rapid protocol for the synthesis of 3,4-disubstituted and 3,4,5-trisubstituted isoxazoles under catalyst-free conditions is described. This protocol involves pre-oxidation of aldoxime into nitrile oxide using diacetoxyiodobenzene. The in
SUBSTITUTED OXADIAZOLE DERIVATIVES AS S1P AGONISTS IN THE TREATMENT OF AUTOIMMUNE AND INFLAMMATORY DISEASES
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Page/Page column 98-99, (2010/08/08)
Disclosed are compounds of Formula (I) [INSERT CHEMICAL STRUCTURE HERE] (I) or pharmaceutically acceptable salts thereof, wherein Q is [INSERT CHEMICAL STRUCTURE HERE] or [INSERT CHEMICAL STRUCTURE HERE]; R1 is alkyl or aryl, said aryl optionally substituted with one to five substituents independently selected from C1 to C6 alkyl, C1 to C4 haloalkyl, OR4, and/or halogen; and R2, R3, R4, and n are defined herein. Also disclosed are methods of using such compounds as selective agonists for G protein-coupled receptor S1P1, and pharmaceutical compositions comprising such compounds. These compounds are useful in treating, preventing, or slowing the progression of diseases or disorders in a variety of therapeutic areas, such as autoimmune diseases and vascular disease.
Lanthanide triflate-catalyzed 1,3-dipolar cycloaddition reactions of polymer-supported nitrones with alkenes for the preparation of diverse 2- isoxazoline derivatives
Kobayashi, Shu,Akiyama, Ryo
, p. 9211 - 9214 (2007/10/03)
1,3-Dipolar cycloaddition reactions of polymer-supported nitrones with alkenes proceeded smoothly in the presence of a catalytic amount of a lanthanide triflate to afford the corresponding 2-isoxazolines in high yields. Diverse 2-isoxazoline derivatives were prepared based on these solid- phase reactions.
Synthesis and Herbicidal Activity of Isoxazoledicarboxylic Acid Derivatives
Muenster, Peter,Freund, Wolfgang,Maywald, Volker,Kuekenhoehner, Thomas,Gerber, Matthias,et al.
, p. 21 - 28 (2007/10/03)
Starting from bulk chemicals, novel isoxazoledicarboxylic acid esters were prepared and converted to the corresponding dicarboxylic acid monoamides in a few reaction steps and in high overall yields. Key intermediates for the cycloaddition step were chlor
