The Preparation of Cyclic Dithia and Thiaza Compounds by the Reaction of Potassium Carbonate with Heterocumulenes and Alkylene Dibromides or Carbonate Catalyzed by Organostannyl Compounds
3-dithia- and 1,3-thiaza-2-ylidene compounds were obtained by the heterogeneous reaction of solid potassium carbonate, a sulfur-containing heterocumulene, such as aryl isothiocyanate, carbon disulfide, or carbonyl sulfide, and alkylene dibromides or ethylene carbonate in the presence of bis(tributylstannyl) compounds. The effect of an organostannyl catalyst on these reactions is discussed.
DBU and DBU-Derived Ionic Liquid Synergistic Catalysts for the Conversion of Carbon Dioxide/Carbon Disulfide to 3-Aryl-2-oxazolidinones/[1,3]Dithiolan-2-ylidenephenyl- amine
作者:Binshen Wang、Zhoujie Luo、Elnazeer H. M. Elageed、Shi Wu、Yongya Zhang、Xiaopei Wu、Fei Xia、Guirong Zhang、Guohua Gao
DOI:10.1002/cctc.201500928
日期:2016.2
the reaction effectively. Based on these results, a possible reaction mechanism on the synergistic catalysis of DBU and the ionicliquid is proposed. In addition, the reaction of CS2, ethyleneoxide, and aniline catalyzed by the combination of DBU and the DBU‐derived ionicliquid also proceeds smoothly, which opens a hitherto unreported route to [1,3]dithiolan‐2‐ylidenephenylamine in a straightforward
N-(1,3-dithiolan-2-ylidene)-4-alkylanilines having a hydroxy, alkoxy or alkanoyloxy substituent on the alkyl group are useful as anti-inflammatory agents, as analgesic agents and as antiasthmatic agents. The compounds involved can be prepared by the reaction of an appropriate 4-alkylaniline with a methyl(1,3-dithiolan-2-ylidene)sulfonium salt or with carbon disulfide and ethylene dibromide in the presence of a base.
Dithiadiazafulvalenes-New Strong Electron Donors. Synthesis, Isolation, Properties, and EPR Studies
作者:Gregory V. Tormos、Martin G. Bakker、Ping Wang、M. V. Lakshmikantham、Michael P. Cava、Robert M. Metzger
DOI:10.1021/ja00138a006
日期:1995.8
Several dithiadiazafulvalenes, which are potent electron donors, were isolated as pure compounds for the first time. Solid charge-transfer complexes with TCNQ and also cation-radical and dication salts with perchlorate gegenions were obtained. Two of the TCNQ complexes are moderately conductive at room temperature (0.083 and 0.011 S/cm). A solution EPR study, combined with theoretical calculations, allowed the determination of the relative equilibrium cation-radical and anion-radical concentrations.
Etlis,V.S. et al., Journal of general chemistry of the USSR, 1964, vol. 34, p. 4076 - 4079