A visible-light-induced cascade reaction of 2-vinyloxy arylalkynes with thiosulfonates was developed and provided unexpected thio-substituted dibenzofuranderivatives in moderate yields. Mechanistic studies revealed the thiosulfonylation product of 2-vinyloxy arylalkyne was the key intermediate, and the additive disulfide played the role of hydrogen abstraction in the aromatization process to offer
Visible-light-induced thiotrifluoromethylation of terminal alkenes with sodium triflinate and benzenesulfonothioates
作者:Weiguang Kong、Hejun An、Qiuling Song
DOI:10.1039/c7cc03520a
日期:——
An unconventional reductive quenching cycle was developed to realize the visible-light-induced thiotrifluoromethylation of terminalalkenes. CF3SO2Na was used as an easy to handle CF3 radical source to afford the desired products in moderate to good yields. Mild reaction conditions and a broad substrate scope feature in this transformation.
开发了非常规的还原淬灭循环以实现可见光诱导的末端烯烃的硫代三氟甲基化。CF 3 SO 2 Na用作易于处理的CF 3自由基源,以中等至良好的产率提供所需的产物。这种转化具有温和的反应条件和广泛的底物范围。
Copper(I)-Catalyzed Interrupted Click Reaction: Synthesis of Diverse 5-Hetero-Functionalized Triazoles
The 5‐heterofunctionalized triazoles are important scaffolds in bioactive compounds, but current clickreactions (CuAAC) cannot produce these core structures. A copper(I)‐catalyzed interruptedclickreaction to access diverse 5‐functionalized triazoles is reported. Various 5‐amino‐, thio‐, and selenotriazoles were readily assembled in one step in high yields. The reaction proceeds under mild conditions
Rh(<scp>ii</scp>)/phosphine-cocatalyzed synthesis of dithioketal derivatives from diazo compounds through simultaneous construction of two different C–S bonds
作者:Changqing Rao、Shaoyu Mai、Qiuling Song
DOI:10.1039/c8cc01656a
日期:——
Rhodium(II)/phosphine-cocatalyzed bis-sulfuration of α-diazocarbonyl compounds using thiosulfonates as the sulfenylating agent, which provided two sulfur-containing moieties, was developed via simultaneous inter- and intra-molecular C–S bond formation. This novel protocol provides a rapid syntheticroute to dithioketal derivatives in moderate to good yields in an atom-economic process. The transformation
Synthesis of selenoether and thioether functionalized bicyclo[1.1.1]pentanes
作者:Zhen Wu、Yaohui Xu、Xinxin Wu、Chen Zhu
DOI:10.1016/j.tet.2020.131692
日期:2020.12
Bicyclo[1.1.1]pentane is widely recognized as the bioisostere for aryl, tert-butyl, and internal alkynes. Herein we report an efficient and practical method for the preparation of selenoether and thioether functionalized bicyclo[1.1.1]pentanes from selenosulfonates/thiosulfonates and propellane. A variety of valuable bicyclo[1.1.1]pentanes bearing both selenoether/thioether and sulfone are obtained