An effective method is described to construct C–S/S–S bond starting from O‐alkyl phenylcarbamothioates, giving diverse O‐alkyl S‐phenyl phenylcarbonimidothioates or isothiourea disulfides, by using Cu2O as catalyst in water (without phase‐transfer catalyst) or NiBr2 catalyst at room temperature, respectively, in transformations featuring easy control, environmental friendliness, and good to excellent
Syntheses of N-alkyl, N,N-dialkyl, and N-(4-substituted phenyl) O-ethyl thioncarbamates: a kinetic study
作者:Milutin M. Milosavljević、Aleksandar D. Marinković、Vlada B. Veljković、Dragan D. Milenković
DOI:10.1007/s00706-011-0596-1
日期:2012.1
AbstractThe kinetics of the syntheses of N-alkyl, N,N-dialkyl, and N-(4-substituted phenyl) O-ethyl thioncarbamates from sodium ethyl xanthogenacetate, ten alkylamines, and eight substituted anilines were studied at 25, 30, 35, and 40 °C. The reactions were found to follow second-order kinetics. The kinetic (Arrhenius) parameters, such as the activation energy and the frequency factor, as well as the
Using phenyliodine diacetate as an oxidant and nickel acetate as a promoter, a wide range of unsymmetric thiosulfonates could be furnished easily in moderate to excellent yields starting from N-substituted O-thiocarbamates and sodium sulfinates. This protocol features mild conditions, short reaction times, and high atomic utilization, which can provide an alternative method for the synthesis of unsymmetric
A method for the selective construction of S–N/C(sp2)-S bonds using N-substituted O-thiocarbamates and indoles as substrates is reported. This protocol features good atom utilization, mild conditions, short reaction time, and wide substrate scope, which can provide a convenient path for the functionalization of indoles. In addition, the reaction could be scaled up on gram scale, showing potential application