A facile synthesis of pyrrolo[2,3-b]quinolines via a Rh(i)-catalyzed carbodiimide-Pauson–Khand-type reaction
作者:Takao Saito、Naoki Furukawa、Takashi Otani
DOI:10.1039/b924301a
日期:——
A new straightforward synthetic method for 2,3-dihydro-1H-pyrrolo[2,3-b]quinolin-2-ones via a [RhCl(CO)2]2âdppp catalyzed PausonâKhand-type reaction of N-[2-(2-alkyn-1-yl)phenyl]carbodiimides is reported.
8]naphthyridine and its derivatives were synthesized using two methods: fully intramolecular [2 + 2 + 2] cycloaddition and oxidative aromatization using substituted carbodiimide and modification of an electron-rich indole ring of an L-shaped skeleton via electrophilic reaction and cross-coupling. These L-shaped compounds emitted fluorescence in high quantum yield. The position of substituents affected
用两种方法合成L形,π扩展的五环二苯并吡咯并[1,2- a ] [1,8]萘啶及其衍生物:分子内完全[2 + 2 + 2]环加成反应和使用取代的碳二亚胺进行氧化芳构化和修饰亲电反应和交叉偶联作用制备L型骨架的富电子吲哚环 这些L形化合物以高量子产率发射荧光。取代基的位置通过π共轭和骨架畸变这两种不同的机制影响荧光颜色,这导致被取代的L形化合物发出各种颜色的荧光,并表现出溶剂化荧光变色。
Synthesis of Isoquinolylselenocyanates and Quinolylselenocyanates via Electrophilic Selenocyanogen Cyclization Induced by Pseudohalogen (SeCN)
<sub>2</sub>
Generated
<i>in situ</i>
A strategy for the synthesis of isoquinolylselenocyanates and quinolylselenocyanates through electrophilicselenocyanogencyclization has been developed. The feature of this reaction is that the sequential process was induced directly by generated in situpseudohalogen (SeCN)2generated in situ. Additionally, the obtained selenocyanates allowed functional group diversification, which could be potential
A novel and efficient strategy for one-step synthesis of allylated quinolines and isoquinolines via palladium-catalyzed cyclization-allylation of azides and allyl methyl carbonate is developed for the first time. The results indicated that the regioselective synthesis of allyl- and diallyl-substituted quinolines/isoquinolines depends on different substituted groups at R(1) and R(4) positions, such
AgSCF<sub>3</sub>/Na<sub>2</sub>S<sub>2</sub>O<sub>8</sub>-Promoted Trifluoromethylthiolation/Cyclization of <i>o</i>-Propargyl Arylazides/<i>o</i>-Alkynyl Benzylazides: Synthesis of SCF<sub>3</sub>-Substituted Quinolines and Isoquinolines
作者:Yi-Feng Qiu、Yue-Jie Niu、Xi Wei、Bao-Qian Cao、Xi-Cun Wang、Zheng-Jun Quan
DOI:10.1021/acs.joc.9b00181
日期:2019.4.5
A AgSCF3/Na2S2O8-promoted trifluoromethylthiolation/cascade cyclization of o-propargyl arylazides (or o-alkynyl benzylazides) triggered by a carbon carbon triple bond is reported. This strategy provides the synthesis of " valuable SCF3-substituted quinoline and isoquinoline systems via the construction of one C(sp(2)) SCF3 bond and one C-N bond within one process.