Synthesis of Isoxazoles via One-Pot Oxidation/Cyclization Sequence from Propargylamines
作者:Mengyan Duan、Guodong Hou、Yabiao Zhao、Congjun Zhu、Chuanjun Song
DOI:10.1021/acs.joc.2c00896
日期:2022.8.19
A facile strategy for the synthesis of isoxazoles has been efficaciously developed, which involves oxidation of propargylamines to the corresponding oximes followed by CuCl-mediated intramolecular cyclization of the latter. This protocol shows a straightforward way to construct a series of isoxazole cores with a wide range of functional group compatibility. Meanwhile, a gram-scale experiment and synthetic
<i>tert</i>-Butyl nitrite triggered radical cascade reaction for synthesizing isoxazoles by a one-pot multicomponent strategy
作者:Leijing Chen、Zhen Wang、Hui Liu、Xinyue Li、Bin Wang
DOI:10.1039/d2cc02823a
日期:——
TBN/Na2S2O8-mediated radical cascade reaction of alkenes with aldehydes involving the formation of diverse new bonds in one-pot.
TBN/Na2S2O8介导的烯烃与醛的自由基级联反应,涉及在一个反应体系中形成多种新键。
Discovery of 4-nitro-3-phenylisoxazole derivatives as potent antibacterial agents derived from the studies of [3 + 2] cycloaddition
作者:Yan Zhang、Zhiwu Long、Longjia Yan、Li Liu、Lan Yang、Yi Le
DOI:10.1039/d2ra05009a
日期:——
Polysubstituted phenylisoxazoles were designed and synthesized to discover new antibacterial agents via [3 + 2] cycloaddition. Thirty-five compounds with a phenylisoxazole scaffold were characterized by NMR, HRMS, and X-ray techniques. After being evaluated against Xanthomonas oryzae (Xoo), Pseudomonas syringae (Psa), and Xanthomonas axonopodis (Xac), 4-nitro-3-phenylisoxazole derivatives were found