The reaction of hydroxylamine with aryl trifluoromethyl-β-diketones: Synthesis of 5-hydroxy-5-trifluoromethyl-Δ2-isoxazolines and their dehydration to 5-trifluoromethylisoxazoles
作者:Vinod Kumar、Ranjana Aggarwal、Shiv P. Singh
DOI:10.1016/j.jfluchem.2006.03.009
日期:2006.7
Reaction of hydroxylamine hydrochloride with aryl trifluoromethyl-β-diketones affords 5-hydroxy-5-trifluoromethyl-Δ2-isoxazolines rather than the reported 3-trifluoromethylisoxazoles. The structural assignment is based on the analysis of their NMR (1H, 13C and 19F) spectral data and of their dehydration products, 5-trifluoromethylisoxazoles.
[EN] HYDROXYISOXAZOLINES AND DERIVATIVES THEREOF<br/>[FR] HYDROXYISOXAZOLINES ET LEURS DÉRIVÉS
申请人:BAYER AG
公开号:WO2020254487A1
公开(公告)日:2020-12-24
The present disclosure relates to the use of hydroxyisoxazolines and derivatives thereof as fungicides. It also relates to new hydroxyisoxazolines derivatives, their use as fungicides and compositions comprising thereof. Formula (I)
[EN] BENZYLPHENYL HYDROXYISOXAZOLINES AND ANALOGUES AS NEW ANTIFUNGAL AGENTS<br/>[FR] BENZYLPHÉNYL HYDROXYISOXAZOLINES ET ANALOGUES EN TANT QUE NOUVEAUX AGENTS ANTIFONGIQUES
申请人:BAYER AG
公开号:WO2020254489A1
公开(公告)日:2020-12-24
The present application relates to new hydroxyisoxazolines derivatives, their use as fungicides and compositions comprising thereof. Formula (I)
Haloacetylated enol ethers. 7 . Synthesis of 3-aryl-5-trihalomethylisoxazoles and 3-aryl-5-hydroxy-5-trihalomethyl-4,5-dihydroisoxazoles
作者:Marcos A. P. Martins、Geonir M. Siqueira、Giovani P. Bastos、Helio G. Bonacorso、Nilo Zanatta
DOI:10.1002/jhet.5570330612
日期:1996.11
cyclocondensed with hydroxylamine hydrochloride to afford the 3-aryl-5-hydroxy-5-trihalomethyl-4,5-dihydroisoxazoles 3a-g, 4a-f in good yield. The dehydratation of compounds 3a-g with concentrated sulfuric acid, led the corresponding 3-aryl-5-trichloromethylisoxazoles 5a-g. An alternative one-pot procedure yields 3-aryl-5-trihalomethylisoxazoles 5,6a-g directly by cyclocondesation of 1,2a-g with hydroxylamine
β-芳基-β-甲氧基乙烯基三卤甲基酮1a-g,2a-g [芳基= p -YC 6 H 4,其中Y = H,Me,OMe,F,Cl,Br,NO 2 ]与羟胺盐酸盐环缩合得到3-芳基-5-羟基-5-三卤甲基-4,5-二氢异恶唑3a-g,4a-f具有良好的收率。用浓硫酸使化合物3a-g脱水,得到相应的3-芳基-5-三氯甲基异恶唑5a-g。另一种一锅法直接通过1,2a-g的环缩构反应生成3-芳基-5-三卤代甲基异恶唑5,6a -g 在过量浓盐酸存在下,用盐酸羟胺处理。
SUBSTITUTED ISOXAZOLINES, PHARMACEUTICAL COMPOSITIONS CONTAINING SAME, METHODS OF PREPARING SAME, AND USES OF SAME
申请人:Brittain E.A. Dominic
公开号:US20080027059A1
公开(公告)日:2008-01-31
The invention relates to substituted isoxazolines according to the general formula (I):
in which A, R1, R2, R3, R4, Z, X, m, n, and p, are given in the claims, and salts thereof, to pharmaceutical compositions comprising said substituted isoxazolines, to methods of preparing said substituted isoxazolines as well as the use thereof for manufacturing a pharmaceutical composition for the treatment of diseases known to be at least in part mediated by HDAC activity or whose symptoms are known to be alleviated by HDAC inhibitors.