39969-91-0Relevant academic research and scientific papers
Thioamides via thiatriazolines
Kolakowski, Robert V.,Shangguan, Ning,Williams, Lawrence J.
, p. 1163 - 1166 (2007/10/03)
A method for thioamide formation from dithioacids and azides is described and a mechanistic framework is presented.
Synthesis and characterization of new 99mTc-radiopharmaceuticals with dithiobenzoate derivatives for the study of septic inflammatory processes
Mevellec,Roucoux,Noiret,Moisan,Patin,Duatti
, p. 319 - 331 (2007/10/03)
Improved methods for the preparation of 99mTc-radiopharmaceuticals containing dithiobenzoate ligands, in sterile and pyrogen free conditions, are described. These procedures are based on the reaction of these ligands either with [99mTc] pertechnetate in the presence of a strong reducing agent (HCl/ tertiary phosphine, SnCl2·2H2O), or with pre-reduced complexes obtained from different kit formulations. All the preparations led to the high-yield formation of the neutral and lipophilic 99mTc-complex [99mTc][Tc(S3CPh)2 (S2CPh)], which is analogous to the corresponding compounds obtained with rhenium and the long-lived β-emitting isotope technetium- 99 g recently described. HPLC analysis and thin layer chromatography were used to confirm the characterisation of the resulting 99mTc-radiopharmaceutical which was found to be potentially suitable for blood-cell labelling as applied to the diagnosis of inflammatory processes. Copyright
Substituted 1,4,2-Dithiazines: Synthesis by Ring Expansion of 1,3-Dithiolium Cations, Solution Redox Properties and X-Ray Crystal Structures of a Monocyclic and a Bicyclic Derivative
Bryce, Martin R.,Davison, Gordon R.,Batsanov, Andrei S.,Howard, Judith A. K.
, p. 2295 - 2302 (2007/10/02)
A range of derivatives of the 8 ?-electron 1,4,2-dithiazine system, viz. compounds 11a-d and 19-24, have been synthesized by ring expansion of the corresponding 1,3-dithiolium salts 8a-d and 13-18, respectively, using a mixture of iodine and aqueous ammon
Dithiocarboxylic Acids and Derivatives from Carboxylic Esters and Lactones with the Organoboron Sulfide Reagent (9-BBN)2S
Koester, Roland,Kucznierz, Ralf,Seidel, Guenter,Betz, Peter
, p. 1023 - 1032 (2007/10/02)
Bis(1,5-cyclooctanediylboryl) sulfide (1) reacts with carboxylic esters to give the dithiocarboxylic 1,5-cyclooctanediylboryl esters 2a-f in high yields (2a: X-ray crystal structure analysis).Methanolysis of 2a-f leads to the dithiocarboxylic acids 5a-f, which form the corresponding piperidinium salts in the presence of piperidine.When cyclic esters (γ-, δ-lactones) are allowed to react with 1, the boryloxy-substituted dithiocarboxylic 1,5-cyclooctanediylboryl esters 3a-c are obtained.Key Words: (9-BBN)2S, reagent / OC-Sulfoborations / 1,2-Eliminations, of R2BOR', (R2B)2O / Dithiocarboxylic 1,5-cyclooctanediylboryl esters / Dithiocarboxylic acids
