Sulfonic peracids — III. Heteroatom oxidation and chemoselectivity
作者:R. Kluge、M. Schulz、S. Liebsch
DOI:10.1016/0040-4020(96)00202-5
日期:1996.4
investigated thep-toluenesulfonic peracid (2) generated in situ in the oxidation of different types of compounds containing nitrogen and/or sulfur. The sulfonic peracid2 shows a remarkable chemoselectivity characterized by a preferred oxidation of sulfides to the sulfones in the presence of amines or olefins and a strong dependence on the nature of the amine in the competitive oxidation of olefins and amines.
An Environmentally Friendly Oxidation System for the Selective Oxygenation of Aldimines to Oxaziridines with Anhydrous TBHP and Alumina-Supported MoO3 as a Recyclable Heterogeneous Catalyst
作者:Sweety Singhal、Suman L. Jain、V. V. D. N. Prasad、Bir Sain
The selective rearrangement of oxaziridines to amides via a single electron transfer (SET) pathway is unexplored. In this study, we present a weak base-promoted selective rearrangement of oxaziridines to amides via visible-light photoredox catalysis. The developed method shows excellent functional group tolerance with a broad substrate scope and good to excellent yields. Furthermore, control experiments
Autoxidation reactions of imines to form oxaziridines and amides
作者:Barbara J. Auret、Derek R. Boyd、Peter B. Coulter
DOI:10.1039/c39840000463
日期:——
The formation of oxaziridines and the isomeric amides in equal amounts by the spontaneous autoxidation of several liquid imines via peroxyimidic acid intermediates is reported.
UV–Vis Monitoring of Radical Polymerizations by Spin Trapping with Chromophoric Nitrones
作者:Ralph Husmann、Sebastian Wertz、Constantin G. Daniliuc、Sascha W. Schäfer、Ciarán B. McArdle、Armido Studer
DOI:10.1021/ma4025174
日期:2014.2.11
The application of chromophoric radicalspintraps for highly sensitive UV–vis monitoring of conversion of radical enhanced spin capturing polymerizations (ESCP) is presented. In ESCP the growing macroradical is reacting with a nitrone providing the corresponding polymeric nitroxide radicalspintrap which will react irreversibly with a second macroradical to eventually give a polymeric alkoxyamine