3313-77-7Relevant academic research and scientific papers
A new synthesis of trifluoromethyl sulfides utilizing thiocyanates and fluoroform
Potash, Shay,Rozen, Shlomo
, p. 173 - 176 (2014)
Fluoroform is a potent greenhouse gas which should not be released to the atmosphere. Large amounts of it are stored and wait for new and useful reactions to be based on it. One such general reaction that is described in this paper is its use in preparation of the important organic trifluoromethyl sulfides. Aliphatic, aromatic and heterocyclic thiocyanates are easy to prepare. They were reacted with fluoroform-based CuCF3 to form the corresponding (trifluoromethyl)thio derivatives.
Effect of Solvation on the Nucleophilic Reaction of Stable Carbanions with Diaryl Disulfides
Gilbert, H. F.
, p. 7059 - 7065 (2007/10/02)
Stable carbanions react with diaryl disulfides in aqueous solution by direct displacement (SN2) reaction to yield an arylthiol anion and the corresponding sulfide as products.The reaction of 1,3-dicarbonyl carbanions with 5,5'-dithiobis(2-nitrobenzoic acid) is characterized by Broensted βC value of 0.5.Nitroalkane carbanions react 102-104 slower than 1,3-dicarbonyl carbanions of the same pK and are correlated by a Broensted βC of 0.95.The second-order rate constants for the reaction of nitroalkane carbanions increase by factors of 104-106 as the solvent is changed from water to dimethyl sulfoxide.Smaller increases are observed in the rate constants for reaction of 2,4-pentadienone carbanion (102) and malonitrile carbanion (100.6) with the same sulfide.A linear correlation is found between log (kMe2SO4/kHOH) and the increase in pK for the carbon acid ionization on changing the solvent from water to dimethyl sulfoxide.The effect is attributed to large differences in ground-state carbanion solvation which are reduced or absent in the transition state.Parallels are drawn between the nucleophilic reaction of stable carbanions with diaryl disulfides and proton-transfer reactions of the same carbanions.
