Rapid, efficient, and room temperature synthesis of nitrones in excellent yields over MgO under solvent-free conditions
作者:Hassan Valizadeh、Leila Dinparast
DOI:10.1002/hc.20527
日期:——
A large variety of C-aryl and C-alkyl nitrones were synthesized within 0.5–15 min via the condensation of aldehydes with N-(methyl, phenyl, or t-butyl)hydroxylamines over MgO by hand-grinding with an agate mortar. These reactions were investigated under different conditions and over different solid supports including basic alumina, montemorillonite, MgO, and molecular sieves (pore size 3 A). In the
通过用玛瑙研钵手工研磨,醛与 N-(甲基、苯基或叔丁基)羟胺在 MgO 上缩合,在 0.5-15 分钟内合成了多种 C-芳基和 C-烷基硝酮。这些反应在不同条件下在不同的固体载体上进行研究,包括碱性氧化铝、蒙脱石、MgO 和分子筛(孔径 3A)。在更有趣的情况下,硝酮是在 MgO 上制备的,无需加热和任何催化剂。在此过程中,硝酮的制备时间非常短,收率高,纯度好,而且在后处理中不使用有害溶剂。© 2009 Wiley Periodicals, Inc. 杂原子化学 20:177–181, 2009; 在线发表于 Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002/hc.20527