已经开发了使用ZnO @ Fe 3 O 4合成异恶唑5(4 H)-one衍生物的有效且环保的方法核-壳纳米催化系统。芳族/杂环醛,盐酸羟胺和乙酰乙酸乙酯的单锅多组分反应在水性条件下在略微升高的温度下以极高的收率形成标题化合物。当前的新方案对环境友好,因为它提供了一些有趣的有前途的功能,如安全性,原子效率,低成本,温和的条件,废物最少,催化剂可回收性,水为溶剂,易于加工并具有出色的官能团耐受性结构上不同的异恶唑衍生物的合成。所有产品均通过光谱和分析方法表征。用单晶X射线衍射法研究了代表性的标题衍生物的结构。
Developing a cost effective and environmentally benign solvent system is of the utmost importance in the chemical industry. One current proposal is the replacement of conventional hazardous volatil...
One-pot three-component synthesis of isoxazole using ZSM-5 as a heterogeneous catalyst
作者:Navnath T. Hatvate、Shrikant M. Ghodse
DOI:10.1080/00397911.2020.1815786
日期:2020.12.1
route for the synthesis of isoxazole derivatives has been developed using ZSM-5 as a heterogeneous catalyst. The reaction was carried out under a solvent-free condition to afford the desired products in good yields. A variety of functional groups was tolerated under the reaction conditions employed. Moreover, the heterogeneous catalyst (ZSM-5) was recovered and reused several times without significant
Green synthesis of 3,4‐disubstituted isoxazol‐5(4
<i>H</i>
)‐ones using ZnO@Fe
<sub>3</sub>
O
<sub>4</sub>
core–shell nanocatalyst in water
作者:M. Shanshak、Srinivasa Budagumpi、Jan Grzegorz Małecki、Rangappa S. Keri
DOI:10.1002/aoc.5544
日期:2020.4
for the synthesis of isoxazol‐5(4H)‐one derivatives has been developed using a ZnO@Fe3O4 core–shell nanocatalytic system. The one‐pot, multicomponent reaction of an aromatic/heterocyclic aldehyde, hydroxylamine hydrochloride and ethyl acetoacetate under aqueous conditions at slightly elevated temperature resulted in the formation of title compounds in extremely good yields. The present new protocol
已经开发了使用ZnO @ Fe 3 O 4合成异恶唑5(4 H)-one衍生物的有效且环保的方法核-壳纳米催化系统。芳族/杂环醛,盐酸羟胺和乙酰乙酸乙酯的单锅多组分反应在水性条件下在略微升高的温度下以极高的收率形成标题化合物。当前的新方案对环境友好,因为它提供了一些有趣的有前途的功能,如安全性,原子效率,低成本,温和的条件,废物最少,催化剂可回收性,水为溶剂,易于加工并具有出色的官能团耐受性结构上不同的异恶唑衍生物的合成。所有产品均通过光谱和分析方法表征。用单晶X射线衍射法研究了代表性的标题衍生物的结构。
Cu/TCH-pr@SBA-15 nano-composite: a new organometallic catalyst for facile three-component synthesis of 4-arylidene-isoxazolidinones
作者:Mehdi Kalhor、Seyed Mehdi Sajjadi、Akbar Dadras
DOI:10.1039/d0ra01314e
日期:——
thoroughly characterized by FT-IR spectroscopy, TEM, FE-SEM, EDX, atomic absorption spectroscopy and N2 adsorption–desorption (BET) studies. Then, a solvent-free method was developed for the three-componentsynthesis of 4-arylidene-isoxazolidinones via condensation of hydroxylamine hydrochloride, ethyl acetoacetate and various aromatic aldehydes using Cu/TCH-pr@SBA-15 as a highly efficient nanocatalyst
excellent intermediates for the synthesis of numerous heterocycles and undergo several chemical transformations. A literature review shows that the best method for the synthesis of these molecules is a three-component reaction among aromatic aldehydes, ethyl acetoacetate and hydroxylamine hydrochloride under different catalysts and conditions. In continuing our research on new simple and environmentally