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.
Action d'un tétrafluoroborate d'oxaziridinium sur les amines et les imines
作者:Gilles Hanquet、Xavier Lusinchi
DOI:10.1016/s0040-4020(01)89569-7
日期:1994.1
The Oxaziridinium salt 1 derived from dihydroisoquinolin is an oxygen transfer reagent to primary amines leading to nitrosoderivatives (if R= Alkyl) or nitrocompounds (if R= Aryl), to tertiaryamines leading to N-oxides, and to secondaryamines and imines leading to the corresponding nitrone.
Photochemically-induced C–C bond formation between tertiary amines and nitrones
作者:Kennosuke Itoh、Ryo Kato、Daito Kinugawa、Hideaki Kamiya、Ryuki Kudo、Masayuki Hasegawa、Hideaki Fujii、Hiroyuki Suga
DOI:10.1039/c5ob01277e
日期:——
organophotosensitizer and photoirradiation was highly effective in accelerating addition reactions. Several nitrones and tertiary amines were successfully utilized to give β-amino hydroxylamines in good yield. Highly regioselective generation of primary α-aminoalkyl radicals based on Lewis's stereoelectronic rule and diastereoselective addition reactions of primary α-aminoalkyl radicals with nitrones were successfully
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
A method for [3 + 2] cycloaddition of oxaziridines with alkynes to form 4-isoxazolines via visible-light photoredox catalysis is described. This method is a greener, atom-economical reaction that tolerates various functional groups and provides good to excellent yield. Moreover, the cyclization products can be conveniently converted into tetrasubstituted allylic alcohols and enamines. A mechanistic