Gold-Catalyzed Intramolecular Allylic Amination of 2-Tosylaminophenylprop-1-en-3-ols. A Concise Synthesis of (±)-Angustureine
作者:Prasath Kothandaraman、Shi Jia Foo、Philip Wai Hong Chan
DOI:10.1021/jo900917q
日期:2009.8.21
ionization of the starting material, which causes intramolecular nucleophilic addition of the sulfonamide unit to the allylic cation moiety and construction of the 1,2-dihydroquinoline. The utility of this N-heterocyclic ring forming strategy as a synthetic tool that makes use of alcohols as pro-electrophiles was exemplified by its application to the synthesis of the bioactive tetrahydroquinoline alkaloid
Brønsted Acid-Catalysed Allylic Amination of 1-(2-Aminoaryl)prop-2-en-1-ols to 1,2-Dihydroquinolines
作者:David Philip Day、Stuart Adam Henry、Yichao Zhao、Jianwen Jin、Guy James Clarkson、Philip Wai Hong Chan
DOI:10.1071/ch18191
日期:——
highly efficient synthetic method to prepare 1,2-dihydroquinolines that relies on trifluoromethanesulfonic acid (TfOH)-catalysed allylicamination of 1-(2-aminoaryl)prop-2-en-1-ols is described. Achieved at a catalyst loading of 0.01 mol-% under mild conditions at room temperature, the reaction was found to be robust, with a wide range of substitution patterns tolerated. The corresponding N-heterocyclic
FeCl<sub>3</sub>·6H<sub>2</sub>O-Catalyzed Intramolecular Allylic Amination: Synthesis of Substituted Dihydroquinolines and Quinolines
作者:Zhiming Wang、Shen Li、Bin Yu、Haibo Wu、Yurong Wang、Xiaoqiang Sun
DOI:10.1021/jo301560w
日期:2012.10.5
efficient method to synthesize 2- or 4-substituted 1,2-dihydroquinolines and quinolines catalyzed by FeCl3·6H2O (2 mol %) was described. The iron-catalyzed intramolecular allylicamination of 2-aminophenyl-1-en-3-ols proceeded smoothly to afford 13 1,2-dihydroquinoline and 8 quinoline derivatives under mild reaction conditions with good to excellent yields (up to 96%).