Photochemistry of <i>N-</i>Acetyl-, <i>N-</i>Trifluoroacetyl-, <i>N-</i> Mesyl-, and <i>N-</i>Tosyldibenzothiophene Sulfilimines
作者:Vasumathi Desikan、Yonglin Liu、John P. Toscano、William S. Jenks
DOI:10.1021/jo702654q
日期:2008.6.1
Time-resolved infrared (TRIR) spectroscopy, product studies, and computational methods were applied to the photolysis of sulfilimines derived from dibenzothiophene that were expected to release acetylnitrene, trifluoroacetylnitrene, mesylnitrene, and tosylnitrene. All three methods provided results for acetylnitrene consistent with literature precedent and analogous experiments with the benzoylnitrene
The iodine‐catalyzed decarboxylative amidation of β,γ‐unsaturated carboxylic acids with chloramine salts is described. This method enables the regioselective synthesis of allylic amides from various types of β,γ‐unsaturated carboxylic acids containing substituents at the α‐ and β‐positions. In the reaction, N‐iodo‐N‐chloroamides, generated by the reaction of a chloramine salt with I2, function as a
Sulfenamide Catalyzed Oxidation of Alcohols to the Corresponding Carbonyl Compounds with Anhydrous Chloramine-T
作者:Hideo Kitagawa、Teruaki Mukaiyama
DOI:10.1248/cpb.50.1276
日期:——
N-tert-Butylbenzenesulfenamide (1) catalyzed oxidation of various alcohols with stoichiometric amount of anhydrous chloramines-T (2) proceeded smoothly at room temperature to afford the corresponding carbonylcompounds in good yields.
作者:Amparo Villar、Claas H. Hövelmann、Martin Nieger、Kilian Muñiz
DOI:10.1039/b505278p
日期:——
Conditions for a first oxidative conversion of alkenes into 2-amino ketones are described, which yield racemic products within a direct oxidation pathway and 2-amino ketones with up to 99% enantiomeric excess from the corresponding enantiopure amino alcohols.
A Simple Method for the Preparation of <i>N</i>-Sulfonylsulfilimines from Sulfides
作者:Andreas L. Marzinzik、K. Barry Sharpless
DOI:10.1021/jo0012039
日期:2001.1.1
While excellent methods exist for the oxidation of sulfides to sulfoxides R1R2S-->R1R2SO, the azaversion of this atom transfer redox process, i.e., R1R2S-->R1R2S=N-SO2R3, has been less reliable. In sulfilimine synthesis, sulfoxide has been an inevitable byproduct in all cases to date, and the yields of sulfilimine have varied widely. A nearly ideal procedure for the sulfide to sulfonyl sulfilimine