in current work a comprehensive mechanism based on intermediate radical termination theory is assumed for raft polymerization of styrene over cumyl dithiobenzoate as raft agent. rate constants for addition (ka) and fragmentation reactions (kf) are set to 6×106 and 5×104 respectively, which lead to an equilibrium constant value of k = ka/kf = 1.2 x 102. moment equations method was used to model ...

the polarographic reduction of aromatic carbodiimides in anhydrous aprotic solvents goes through a carbene intermediate by a diffusion controlled process in two one-electron steps. the first step is the rate-determining step and converts the carbodiirnide to a radical anion (6) that reduces further by a fast one-electron step to a carbene dianion intermediate (7). this abstracts an oxygen, alon...

The polarographic reduction of aromatic carbodiimides in anhydrous aprotic solvents goes through a carbene intermediate by a diffusion controlled process in two one-electron steps. The first step is the rate-determining step and converts the carbodiirnide to a radical anion (6) that reduces further by a fast one-electron step to a carbene dianion intermediate (7). This abstracts an oxygen, ...

0.1016/j.pisc.2014 he Authors. Publis mons.org/licenses rt of an special iss Kinetics”. Copyrig thor. aushel@tamu.edu Abstract PhnJ from the C–P lyase complex catalyzes the cleavage of the carbon–phosphorus bond in ribose-1phosphonate-5-phosphate (PRPn) to produce methane and ribose-1,2-cyclic-phosphate-5-phosphate (PRcP). This protein is a novel radical SAM enzyme that uses glycyl and thiyl ra...

INTRODUCTION We aimed to determine whether the number and type of risk factors are associated with biochemical recurrence-free survival after radical prostatectomy in men with D'Amico intermediate-risk prostate cancer. MATERIALS AND METHODS Between August 1998 and May 2013, 481 Japanese patients underwent antegrade radical prostatectomy. The relationships between the rate of PSA failure after...

The oxidation of caffeine with persulfate and hydroxyl radicals in aqueous solution has been studied by EPR spectroscopy and HPLC analysis. In both cases the formation of 1,3,7-trimethyluric acid is observed as the main final product. A C8]OH radical adduct is postulated as the intermediate after reaction with OH~, and leads to the final product after further oxidation. This radical is too shor...

(S)-2-Hydroxypropylphosphonic acid [(S)-HPP] epoxidase (HppE) is a mononuclear iron enzyme that catalyzes the last step in the biosynthesis of the antibiotic fosfomycin. HppE also processes the (R)-enantiomer of HPP but converts it to 2-oxo-propylphosphonic acid. In this study, all four stereoisomers of 3-methylenecyclopropyl-containing substrate analogues, (2R, 3R)-8, (2R, 3S)-8, (2S, 3R)-8, a...

The SET-induced biaryl cross-coupling reaction is established as the first example of a Grignard S(RN)1 reaction. The reaction is examined within the mechanistic framework of dissociative electron transfer in the presence of a Lewis acid. DFT calculations show that the reaction proceeds through a radical intermediate in the form of an Mg ion-radical cage, which eludes detection in trapping expe...

Table S1. Characteristics according to D’Amico risk classification in PCa patients treated by radical prostatectomy. Table S2. Univariate analysis to predict intermediate-risk subgroups having a comparable risk of biochemical recurrence to that in the high-risk group. Table S3. OR of adverse pathological outcome according to PSAD levels in patients with the intermediate-risk group. Table S4. Mu...