Synthesis and structure of substituted 5-phenoxy-1,2,4-dithiazole-3-ones
摘要:
AbstractSeven new substituted 5‐phenoxy‐1,2,4‐dithiazole‐3‐ones were prepared in modest yield (53–76%) from corresponding O‐phenyl thiocarbamates and chlorocarbonylsulfenyl chloride in dry ether at −10 °C. All of the compounds were characterized by NMR and elemental analysis and some of them by X‐ray diffraction. Preliminary kinetic measurements showed that the parent 5‐phenoxy‐1,2,4‐dithiazole‐3‐one is a very efficient sulfurizing agent toward triphenyl phosphite. J. Heterocyclic Chem., (2011)
Green and efficient synthesis of thioureas, ureas, primary <i>O</i>-thiocarbamates, and carbamates in deep eutectic solvent/catalyst systems using thiourea and urea
developed for the direct preparation of various primary O-thiocarbamates/carbamates as well as monosubstituted thioureas/ureas by using thiourea/urea as biocompatible thiocarbonyl (carbonyl) sources. This procedure used choline chloride/tin(II) chloride [ChCl][SnCl2]2 with a dual role as a green catalyst and reaction medium to afford the desired products in moderate to excellent yields. Moreover, the DES can
通过使用硫脲/尿素作为生物相容性硫代羰基(羰基)源,开发了一种有效且通用的催化方法,用于直接制备各种伯O-硫代氨基甲酸酯/氨基甲酸酯以及单取代硫脲/脲。该过程使用氯化胆碱/氯化锡 ( II ) [ChCl][SnCl 2 ] 2,具有作为绿色催化剂和反应介质的双重作用,以中等至极好的收率提供所需产物。此外,DES 可以很容易地回收和重复使用七个循环,而其活性没有显着损失。此外,该方法在大规模合成所需产物方面表现出非常好的性能。
Synthesis and structure of substituted 5-phenoxy-1,2,4-dithiazole-3-ones
AbstractSeven new substituted 5‐phenoxy‐1,2,4‐dithiazole‐3‐ones were prepared in modest yield (53–76%) from corresponding O‐phenyl thiocarbamates and chlorocarbonylsulfenyl chloride in dry ether at −10 °C. All of the compounds were characterized by NMR and elemental analysis and some of them by X‐ray diffraction. Preliminary kinetic measurements showed that the parent 5‐phenoxy‐1,2,4‐dithiazole‐3‐one is a very efficient sulfurizing agent toward triphenyl phosphite. J. Heterocyclic Chem., (2011)
Yagupol'skii,L.M.; Kondratenko,N.V., Journal of general chemistry of the USSR, 1969, vol. 39, p. 1719 - 1722