Ruthenium-catalyzed reductive cyclization of nitroarenes with trialkylamines leading to quinolines
作者:Chan Sik Cho、Tae Kyung Kim、Bok Tae Kim、Tae-Jeong Kim、Sang Chul Shim
DOI:10.1016/s0022-328x(02)01170-1
日期:2002.5
Nitroarenes react with trialkylamines in the presence of a catalytic amount of a ruthenium catalyst together with tin(II) chloride dihydrate at 180 °C in an aqueousmedium (toluene–H2O) to afford the corresponding quinolines in moderate to good yields. The catalytic pathway seems to be proceeded via a sequence involving initial reduction of nitroarenes to anilines, alkyl group transfer from alkylamines
Organocatalytic Asymmetric Three-Component Povarov Reactions of Anilines and Aldehydes
作者:Jun-Xiang Huang、Ke-Qiang Hou、Qi-Long Hu、Xue-Ping Chen、Jian Li、Albert S. C. Chan、Xiao-Feng Xiong
DOI:10.1021/acs.orglett.0c00206
日期:2020.3.6
diastereoselective three-component Povarov reaction between anilines and aldehydes catalyzed by a chiral amine catalyst. A wide variety of substituted tetrahydroquinolines were obtained with moderate to good yields and excellent enantioselectivity and diastereoselectivity (up to 99% ee and >95:5 dr) under the reaction conditions. Furthermore, the reaction intermediates could be efficiently converted