Application of Radical Cation Spin Density Maps toward the Prediction of Photochemical Reactivity between <i>N</i>-Methyl-1,2,4-triazoline-3,5-dione and Substituted Benzenes
作者:Gary W. Breton、Kevin R. Hoke
DOI:10.1021/jo4001417
日期:2013.5.17
Visible light irradiation of N-methyl-1,2,4-triazoline-3,5-dione in the presence of substituted benzenes is capable of inducing substitution reactions where no reaction takes place thermally. In addition to the formation of 1-arylurazole products resulting from ring substitution, side-chain substitution occurs in some cases where benzylic hydrogens are accessible to form benzylic urazole products.
Acid-catalyzed reaction of 4-methyl-1,2,4-triazoline-3,5-dione (MeTAD) with substituted benzenes
作者:Gary W. Breton
DOI:10.1016/j.tetlet.2010.12.024
日期:2011.2
The reaction of 4-methyl-1,2,4-triazoline-3,5-dione (MeTAD) with substituted benzenes under the influence of trifluoroacetic acid catalysis was investigated. Generally, good-to-high yields of 1-arylurazoles resulting from aromatic substitution were obtained. Successful reaction required moderately electron-rich aromatics with proper substitution patterns. The reaction was tolerant of functionality