Titanium(salen)-Catalysed Synthesis of Di- and Trithiocarbonates from Epoxides and Carbon Disulfide
作者:Christopher Beattie、Michael North
DOI:10.1002/cctc.201400005
日期:2014.3.12
tributylamine forms a highly active catalyst system for the reactionbetween epoxides and carbondisulfide to lead to di‐ and/or trithiocarbonates. Reactions can be performed at 90 °C by using just 0.5–1.0 mol % of the catalysts. The reactions proceed with the inversion of the epoxide configuration and on the basis of kinetic and spectroscopicevidence, a mechanism to account for the results is proposed.
A Convenient Preparation of 1,3-Dithiole-2-thione and 1,3-Diselenole-2-selone Derivatives
作者:K. Takimiya、A. Morikami、T. Otsubo
DOI:10.1055/s-1997-787
日期:1997.3
A convenient one-pot preparation of 1,3-dithiole-2-thiones and 1,3-diselenole-2-selones substituted with phenyl, alkyl, alkylthio, hydroxymethyl, and formyl groups was accomplished from readily available acetylenes in good to excellent yields.
A simple, high-yielding synthesis of 2-methyl-1,3-dithi- olium tetrafluoroborates is reported. The reaction of these salts with N,N-dimethylformamide and acetic anhydride gives rise to the pre- viously unreported N,N-dimethyl 2-(1,3-dithiol-2-yliden)ethyliden- iminium tetrafluoroborates.
Synthesis and electrochemical studies of tetrathiafulvalene derivatives (TTFs) as redox active ligands
作者:Abd El-Wareth A. O. Sarhan、Makoto Murakami、Taeko Izumi
DOI:10.1002/jhet.5570390413
日期:2002.7
simple route for synthesis of new tetrathiafulvalene dimethyl ester (TTF-DME) is reported. The tetrathifulvalene dimethylester (TTF-DME) has been prepared by introducing an ester coordination function as a bifunctional new donor. The redox behavior of the TTF-DME was investigated in comparison to the well-known dibenzotetrathiafulvene (DB-TTF) by cyclic voltammetry. A two-electron redox behavior was observed
azides, on thermolysis in refluxing toluene, give 3-substituted 1,4,2-dithiazines which thermally extrude sulfur atom of the 4-position selectively to yield 3-substituted isothiazoles, while 2-unsubstituted 1,3-dithiol-2-yl azides undergo both ring expansion yielding 1,4,2-dithiazines and peculiar thermal dissociation into 1,3-dithiol-2-ylidene carbenes and hydrogen azide.