C:Corrosive;17696-73-0Relevant articles and documents
Production of OH radicals in the autoxidation of the Fe(II)-EDTA system
Yurkova, Irina L.,Schuchmann, Heinz-Peter,Von Sonntag, Clemens
, p. 2049 - 2052 (1999)
The autoxidation of oxygenated solutions of Fe(II)-EDTA containing dimethyl sulfoxide (DMSO) proceeds with the participation of the OH radical. Its presence as the crucial reactive intermediate has been established by the competition method based on the formation of methanesulfinic acid from DMSO as the reference. As competitors were used guanosine, methanol, tert-butyl alcohol, acetamide, and acetonitrile, whose rate constants span a range of almost three orders of magnitude. In the absence of competitors the yield of methanesulfinic acid is between 1/5 and 1/6 of the Fe(III) formed. Other products are formic acid and formaldehyde. The process of DMSO oxidation is essentially a chain reaction initiated by the OH radical which is at the same time one in a succession of several free-radical chain carriers, and in which the EDTA complex of Fe(II) also participates.
Unusual stereoselectivity of methionine-γ-lyase from Citrobacterfreundii toward diastereomeric (S)-methionine S-oxide
Faleev, Nikolai G.,Tsvetikova, Marina A.,Ilyin, Mikhail M.,Yufryakov, Vyacheslav S.,Kolotyrkina, Natal'ya G.,Kulikova, Viktoria V.,Demidkina, Tatiana V.,Kochetkov, Konstantin A.
, p. 236 - 238 (2021)
Using a diastereomeric mixture of (S)-methionine S-oxide as an example, kinetic preference of methionine-γ-lyase toward a stereogenic center at the γ-sulfur atom of the (2S, RS) diastereomer was discovered for the first time.
Reductive Cleavage of Secondary Sulfonamides: Converting Terminal Functional Groups into Versatile Synthetic Handles
Fier, Patrick S.,Kim, Suhong,Maloney, Kevin M.
supporting information, p. 18416 - 18420 (2019/11/20)
Sulfonamides are pervasive in pharmaceuticals and agrochemicals, yet they are typically considered as terminal functional groups rather than synthetic handles. To enable the general late-stage functionalization of secondary sulfonamides, we have developed a mild and general method to reductively cleave the N-S bonds of sulfonamides to generate sulfinates and amines, components which can further react in situ to access a variety of other medicinally relevant functional groups. The utility of this platform is highlighted by the selective manipulation of several complex bioactive molecules.
Photopolymerization kinetics of α-disulfone cationic photoinitiator
Chen, Hua,Yang, Jinliang,Guo, Dongfang,Wang, Liyuan,Nie, Jun
experimental part, p. 57 - 63 (2012/06/04)
An α-disulfone cationic photoinitiator called 4-tolyl methyl disulfone was synthesized and characterized by UV-vis absorption spectroscopy, LCMS, IR and NMR. Eight vinyl ether monomers were chosen to study the kinetics of photopolymerization by real-time infrared spectroscopy (FT-IR). It showed that 4-tolyl methyl disulfone was an effective cationic photoinitiator. The rate of polymerization and ultimate conversion increased with increase of 4-tolyl methyl disulfone concentration and light intensity.
