B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>-Catalyzed Electron Donor–Acceptor Complex-Mediated Aerobic Sulfenylation of Indoles under Visible-Light Conditions
efficient B(C6F5)3-catalyzed aerobic oxidative C–S cross-coupling reaction of thiophenol with indoles was developed, affording a wide range of diaryl sulfides in good yields. An electron donor–acceptor complex between B(C6F5)3 and indoles was formed, facilitating the photoinduced single-electron transfer (SET) from indole substrates to the B(C6F5)3catalyst. This protocol demonstrates a new reaction model
开发了一种高效的 B(C 6 F 5 ) 3催化的苯硫酚与吲哚的有氧氧化 C-S 交叉偶联反应,以良好的收率提供了范围广泛的二芳基硫化物。B(C 6 F 5 ) 3和吲哚之间形成了电子供体-受体复合物,促进了从吲哚底物到B(C 6 F 5 ) 3催化剂的光诱导单电子转移(SET) 。该协议展示了使用 B(C 6 F 5 ) 3作为单电子氧化剂的新反应模型。
Synthesis of Polysubstituted 3-Chalcogenated Indoles through Copper(I) Iodide-Catalyzed Three-Component Domino Reactions
作者:Feng Liu、Rui Gou、Yi Zhang、Sheng-wei Wu
DOI:10.1055/s-0037-1611691
日期:2019.1
Polysubstituted 3-chalcogenated indoles were synthesized by a three-component, one-pot, dominoreaction of a N-(2-bromophenyl)trifluoroacetamide, a 1-alkyne, a disulfides or diselenides, CuI, and proline in DMF. In this process, tandem Sonogashira coupling, N-cyclization, and sulfenyl/selenyl electrophilic substitution occurred sequentially and smoothly to form the anticipated products in good to excellent
Venting-while-Heating Microwave-Assisted Synthesis of 3-Arylthioindoles
作者:Giuseppe La Regina、Valerio Gatti、Valeria Famiglini、Francesco Piscitelli、Romano Silvestri
DOI:10.1021/co200165j
日期:2012.4.9
We report the first example of venting-while-heating microwave-assisted synthesis of a small library of 3-arylthioindoles. Compounds were prepared in excellent isolated yields (90-98%) within 4 min in a closed vessel by treating indoles with disulfides in the presence of sodium hydride in anhydrous N,N-dimethylformamide. The method was not affected by electron-donating and -withdrawing substituents both on 3-arylthio moiety and at 2- and 5-positions of the indole nucleus.