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
An Efficient Synthesis of Thioesters Starting from
<i>N</i>
‐Arylthiocarbamates and Indoles: A Newman‐Kwart‐Type Rearrangement
作者:Zhi‐Chao Hu、Jing‐Jing Cui、Zhi‐Bing Dong
DOI:10.1002/ejoc.202201075
日期:2022.11.11
In the presence of PhICl2, a series of thioester compounds containing indole structures were obtained startingfrom indoles and the masked thiols (N-arylthiocarbamates). This method has the advantage of easily available startingmaterial, metal and base-free, simple operation, mild reaction conditions, and produces good yields.
<i>N</i>
‐Iodosuccinimide (NIS) Promoted Synthesis of Unsymmetrical Disulfides Starting from Isothiocyanates Under Transition‐Metal‐Free Conditions
作者:Cheng‐Li Yang、Hua‐Qing Xiao、Zhi‐Bing Dong
DOI:10.1002/ejoc.202200954
日期:2022.10.7
Under transition-metal-free conditions, a series of unsymmetrical disulfides could be quickly and conveniently obtained by NIS (N-Iodosuccinimide)-promotion in one pot manner. It's noteworthy that the desired products could be obtained in moderate to good yields from inexpensive and easily available starting materials, providing an alternative way to afford various unsymmetrical disulfides.
在无过渡金属条件下,通过NIS( N -Iodosuccinimide)-促进一锅法可以快速方便地获得一系列不对称二硫化物。值得注意的是,可以从廉价且易于获得的起始材料中以中等至良好的收率获得所需的产品,为提供各种不对称二硫化物提供了一种替代方法。
Copper‐Catalyzed Synthesis of
<i>O/N</i>
‐Alkyl
<i>S</i>
‐Phenyl Phenylcarbamothioates: An Odorless and Chemo‐selective Chan–Lam Reaction to Construct C−S Bond
A series of O/N-alkyl S-phenyl phenylcarbamothioates were obtained smoothly by using odorless organosulfur sources and commercially available phenylboronic acids through a Chan–Lam reaction. The methodology features simple performance, odorless organosulfur source, selective C−S bond formation, and a good functional group tolerance.
I2‐Promoted [3+2] Cyclization of Thiocarbamates with Enaminones: a Protocol for the Synthesis of Polysubstituted Thiazol‐2(3H)‐ones
作者:Xiao‐Hu Xu、Jia‐Hao Weng、Yi Chen、Zhi‐Bing Dong
DOI:10.1002/adsc.202301047
日期:2024.4.9
An I2-promoted [3+2] cyclization reaction between thiocarbamates with enaminones has been developed for the synthesis of thiazol-2(3H)-one derivatives. This protocol involves C-S and C-N bond formation and exhibits good functional group tolerance. The reaction proceeded well at room temperature and provided up to 98% yield of the desired product.