4500-58-7Relevant articles and documents
Synthesis of the first polymer-supported tripodal triphosphine ligand and its application in the heterogeneous hydrogenolysis of benzo[b]thiophene by rhodium catalysis
Bianchini,Frediani,Vizza
, p. 479 - 480 (2007/10/03)
A p-styrenyl substituent attached to the ligand framework allows the tripodal triphosphine moiety -C(CH2PPh2)3 to be introduced as a pendant group in polystyrene matrices via free-radical copolymerisation; in conjunction w
Reductive desulfurization of organosulfur compounds with sodium in liquid ammonia
Yu, Zhengkun,Verkade, John G.
, p. 79 - 82 (2007/10/03)
Greater than 95% sulfur removal was observed when dialkyl mono or polysulfides were treated with Na in liquid ammonia. Polycyclic aromatic sulfur heterocycles were only moderately desulfurized under these conditions while phenylthio derivatives gave thiophenol as the major product and dithiophenols as the minor products.
Oxidative Cleavage of S-Arylmercaptoacetic Acids by Sodium Perborate: Kinetic and Correlation Study
Kabilan, S.,Pandiarajan, K.,Krishnasamy, K.,Sankar, P.
, p. 443 - 452 (2007/10/02)
Kinetics of oxidation of twenty six S-arylmercaptoacetic acids (SAMA) (I) by sodium perborate (PB) have been studied in acid medium.The product of oxidation is the corresponding thiophenol.The rate data of meta- and para-substituted acids have been correlated with DSP equations.While the para-compounds correlate well with ?I and ?0R values, the meta-compounds correlate well with ?I and ?-R values.The reaction constants are negative and of smaller magnitudes.Further, the ortho-substituted acids show a good correlation with a triparametric equation involving Taft's ?I and ?0R and Charton's steric parameter ν.There is a considerable steric contribution to the total ortho-substituent effect.Based on these observations, mechanism involving the formation of protonated arylsulfinylacetic acid intermediate, followed by an intramolecular rearrangement leading to the product thiophenol has been proposed.