Oxidation by Chemical Manganese Dioxide. Part 2.1 Simple and High-yielding Synthesis of Symmetrical Disulfides via the Oxidative Coupling of Thiols†
作者:Masao Hirano、Sigetaka Yakabe、Hideki Chikamori、James H. Clark、Takashi Morimoto
DOI:10.1039/a709080c
日期:——
Aromatic, aliphatic, and alicyclic thiols readily underwent oxidative coupling with chemical manganese dioxide in hexane to afford the corresponding disulfides in essentially quantitative yields under relatively mild conditions.
A Novel and Efficient Synthesis of Unsymmetrical Disulfides
作者:Dariusz Witt、Sylwia Antoniow
DOI:10.1055/s-2007-965873
日期:2007.2
method for the synthesis of unsymmetrical trisulfides under mild conditions in very good yields. The designed method is based on the straightforward preparation of 1-[(5,5-dimethyl-2-thioxo-1,3,2-dioxaphosphorinan-2-yl)trisulfanyl]dodecane from readily available 5,5-dimethyl-2-sulfanyl-2-thioxo-1,3,2-dioxaphosphorinane, sulfur dichloride (SCl 2 ) and dodecane-1-thiol. The unsymmetrical trisulfides can
A versatile Cu-catalyzed cross-coupling reaction to various unsymmetrical disulfanes has been presented, from phthalimide-carried disulfur transfer reagents and commercially available boronic acids under mild and practical conditions. The method features the unprecedented use of phthalimide-carried disulfurating reagents (Harpp reagent) in cross-coupling chemistry and is highlighted by the broad substrate scopes, even applicable for the transfer of aryldisulfur moieties (ArSS-). Notably, the robustness of this methodology is shown by the late-stage modification of bioactive scaffolds of coumarin, estrone, and captopril.