Generalized Synthesis and Physical Properties of Dialkoxy Disulfides
作者:Eli Zysman-Colman、David N. Harpp
DOI:10.1021/jo050574s
日期:2005.7.1
of the inherently large barrier to rotation and the resultant thermal decomposition pathway is discussed. Both phenomena are shown to be solvent independent; hinderedrotation is substrate independent. The decomposition of 1a is ca. 7 kcal/mol higher than the barrier to rotationabout the S−S bond. The combined evidence suggests acyclic unsymmetric homolytic cleavage of the dialkoxy disulfide.
In this paper, trifluoroethanol (TFE) was confined into SBA-15 and compared with its similar non-fluorous systems in the metal-free oxidation of sulfides to sulfoxides in the presence of H2O2. This catalytic system successfully performed the oxidation and also showed superior activity to the other non-fluorous versions. (C) 2015 Elsevier B.V. All rights reserved.