Abstract
AbstractA 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 Å). In the more interesting cases, nitrones were prepared over MgO without heating and any catalyst. In this procedure, nitrones were prepared in a very short time, excellent yields, and good purity without using harmful solvents in the workup. © 2009 Wiley Periodicals, Inc. Heteroatom Chem 20:177–181, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20527
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