Self-assembled multilayer iron(0) nanoparticles (NPs, 6–10 nm), namely, sulfur-modified Au-supported Fe(0) [SAFe(0)], were developed for ligand-free one-pot carbon–carbon/carbon–nitrogen bond-formingreactions. SAFe(0) was successfully prepared using a well-established metal–nanoparticle catalyst preparative protocol by simultaneous in situ metal NP and nanospace organization (PSSO) with 1,4-bis(trimethylsilyl)-1
A self-relay rhodium(I)-catalyzed cyclization of alkyne–azides with two σ-donor/π-acceptor ligands (isonitriles and CO) to form sequentially multiple-fused heterocycle systems via tandem nitrene transformation and aza-Pauson–Khand cyclization has been developed. In this approach, an intriguing chemoselective insertion process of isonitriles superior to CO was observed. This reaction provides an alternative
具有两个σ-供体/π-受体配体(腈和CO)的自中继铑(I)催化的炔-叠氮化物的环化反应通过串联氮转化和氮杂-Pauson-Khand环化反应依次形成多重稠合杂环系统已开发。在这种方法中,观察到了一种优于CO的有趣的异腈化学选择性插入过程。该反应提供了合成功能化吡咯并[2,3- b ]吲哚支架的替代策略。
Unprecedented synthesis of 1,2,3-triazolo-cinnolinone <i>via</i> Sonogashira coupling and intramolecular cyclization
作者:Avnish Kumar、Dharmendra Kumar Tiwari、Balasubramanian Sridhar、Pravin R. Likhar
DOI:10.1039/c8ob01152d
日期:——
An unprecedented copper mediated one-pot sequential synthesis of 1,2,3-triazolo cinnolinone derivatives from 2-halo-phenyl triazoles and terminal alkynes has been reported. Under the optimized reaction conditions, a broad range of substituted triazoles and alkynes were found to participate in this transformation, thus affording unknown 1,2,3-triazolo cinnolinone derivatives in moderate to excellent
Facile and efficient synthesis of [1,4]oxazino[3,2-b]indoles and 1H-pyrazino[2,3-b]indoles through gold-catalyzed cascade cyclization of (azido)ynamides
作者:Cang-Hai Shen、Yuan Pan、Yong-Fei Yu、Ze-Shu Wang、Weimin He、Ting Li、Long-Wu Ye
DOI:10.1016/j.jorganchem.2015.01.029
日期:2015.10
[1,4]Oxazino[3,2-b]indoles as well as 1H-pyrazino[2,3-b]indoles are constructed in good to excellent yields via gold-catalyzed cascade cyclization of (azido)ynamides. The use of readily available starting materials, a simple procedure and mild reaction conditions are other significant features of this method.
通过金催化的(叠氮基)乙酰胺的环化反应,可以很好地制备[1,4]恶嗪基[3,2- b ]吲哚以及1 H-吡嗪并[2,3- b ]吲哚。使用容易获得的起始原料,简单的步骤和温和的反应条件是该方法的其他重要特征。
Cu(I)-catalyzed cascade intramolecular cyclization of 2-propynol phenyl azides and diarylphosphine oxides for the synthesis of bisphosphorylated indole derivatives
The [Cu(OTf)]2·C6H6 catalyzed cascade intermolecular addition–intramolecular cyclization reaction of easily prepared 2-propynol phenylazides and diarylphosphine oxides was developed. This novel reaction leads to simultaneous formation of one C–N and two C–P bonds in a single step to give bisphosphorylated indole derivatives under mild conditions in moderate to good yields.
开发了[Cu(OTf)] 2 ·C 6 H 6催化的2-丙炔苯叠氮化物和二芳基膦氧化物的级联分子间加成-分子内环化反应。这种新颖的反应可在一个步骤中同时形成一个C–N和两个C–P键,从而在温和条件下以中等至良好的收率得到双磷酸化的吲哚衍生物。