Electrochemical Imination of Sulfoxides Using N-Aminophthalimide
摘要:
[GRAPHICS]A novel electrochemical sulfoxide imination process is described. Our approach starts with a highly selective nitrene transfer from N-aminophthalimide to a variety of sulfoxides. This oxidative treatment is followed by reductive N-N bond cleavage under the controlled current conditions, which leads to a range of parent NH sulfoximines. In addition to solving the challenging problem of removing the N-phthalimido group, the overall process avoids the use of toxic oxidants and metal additives.
Oxidation of 1,1-disubstituted hydrazines with benzeneseleninic acid and selenium dioxide. Facile preparation of tetrazenes
作者:Thomas G. Back、Russell G. Kerr
DOI:10.1139/v82-390
日期:1982.11.1
1,1-disubstituted hydrazines were oxidized with benzeneseleninic acid in methanol, generally producing the corresponding tetrazenes in high yield. Studies of the by-products of the reaction, of the effects of protic vs. aprotic solvents, and trapping experiments suggest that N-aminonitrenes are unlikely intermediates in this oxidation. An alternative mechanism involving a Pummerer-like reaction of seleninamides
Oxidation of 1,1-disubstituted hydrazines to tetrazenes with benzeneseleninic acid
作者:Thomas G. Back
DOI:10.1039/c39810000530
日期:——
The oxidation of 1,1-disubstituted hydrazines with benzeneseleninicacid in methanol affords the corresponding tetrazenes in high yield.
1,1-二取代肼在甲醇中用苯硒酸氧化,可得到相应的四氮烯。
Imination of sulfoxides mediated by IBX with Sc(OTf)<sub>3</sub>as catalyst
作者:Tu-Hsin Yan、Bakthavachalam Ananthan
DOI:10.1080/00397911.2018.1431281
日期:2018.4.18
ABSTRACT Herein we utilized, for the first time, 2-iodoxybenzoate along with scandium triflate as a specific oxidant for PhthNH2 to create sulfoximines. This method efficiently effects imination of aryl, benzyl, cyclic and alkyl substituted S˭O bonds with good to excellent yields. In addition, sterically encumbered sulfoxides have been studied and found that the present protocol is the worthy choice