The organocatalytic synthesis of perfluorophenylsulfides <i>via</i> the thiolation of trimethyl(perfluorophenyl)silanes and thiosulfonates
作者:Jinyun Luo、Muze Lin、Leifang Wu、Zhihua Cai、Lin He、Guangfen Du
DOI:10.1039/d1ob01350e
日期:——
The organic superbase t-Bu-P4-catalyzed direct thiolation of trimethyl(perfluorophenyl)silanes and thiosulfonates was developed. Yields of perfluorophenylsulfides of up to 97% under catalysis of 5 mol% t-Bu-P4 were achieved. This method was shown to provide an efficient way to construct the perfluorophenyl–sulfur bond under mild metal-free reaction conditions.
开发了有机超碱t -Bu-P 4催化的三甲基(全氟苯基)硅烷和硫代磺酸盐的直接硫醇化反应。在 5 mol% t -Bu-P 4的催化下,全氟苯硫醚的产率高达 97% 。该方法被证明提供了一种在温和的无金属反应条件下构建全氟苯基-硫键的有效方法。
Metal‐Free Synthesis of Thiosulfonates via Insertion of Sulfur Dioxide
作者:Guoqing Li、Ziyu Gan、Kexin Kong、Xiaomeng Dou、Daoshan Yang
DOI:10.1002/adsc.201900157
日期:2019.4.16
A simple and catalyst‐free strategy was developed for the synthesis of unsymmetrical thiosulfonates using readily available DABCO⋅(SO2)2 as a solid and bench‐stable sulfur dioxide surrogate. The corresponding thiosulfonates were obtained through a radical pathway with good functional group tolerance. This strategy offers a promising synthesis method for the construction of diverse and useful thiosulfonates
CuCl2-promoted decomposition of sulfonyl hydrazides for the synthesis of thiosulfonates
作者:Junsu Kim、Sanggil Park、Hyungjun Kim、Jinho Kim
DOI:10.1016/j.tetlet.2020.152112
日期:2020.7
Sulfonyl hydrazides recently received much attention as reagents for the introduction of sulfur-containing functional groups into organic compounds, because both sulfonyl and sulfenyl sources could be generated by the oxidation and decomposition of the sulfonyl hydrazides, respectively. However, the transformations of sulfonyl hydrazides into thiosulfonates, which could be produced by the reaction
Synthesis of symmetrical / unsymmetrical thiosulfonates through the disproportionate coupling reaction of sulfonyl hydrazide mediated by phosphomolybdic acid
作者:Mengting Lv、Yufeng Liu、Ke Li、Guoping Yang
DOI:10.1016/j.tetlet.2020.152757
日期:2021.2
catalyst for the synthesis of symmetrical / unsymmetrical thiosulfonates via the disproportionate coupling reaction of sulfonyl hydrazide. The attributes of this reported catalytic system include low catalyst loadings (1 mol%), efficient turnover, and high yields (up to 94%). Additionally, this reaction mechanism involves the formation of a thiyl radical and sulfonyl radical via sulfinylradical disproportionation
据报道,磷钼酸(H 3 PMo 12 O 40)是一种绿色的低成本催化剂,可通过磺酰肼的不成比例的偶联反应合成对称/不对称的硫代磺酸盐。该报道的催化系统的特征包括低催化剂装载量(1mol%),有效的转化率和高产率(高达94%)。另外,该反应机理涉及通过亚磺酰基自由基歧化形成硫代自由基和磺酰基。
Transition-Metal-Free Synthesis of Thiosulfonates through Radical Coupling Reaction
coupling reaction of sulfonyl hydrazides mediated by NIS/K2S2O8 has been developed to afford a variety of biological activity thiosulfonates in moderate to excellent yields. Compared to a known approach for the synthesis of thiosulfonatesfrom sulfonyl hydrazides, this strategy features high yields, mild reaction conditions, and broad substrate scope. The mechanistic studies revealed that the procedure