Mild and Simple Access to Diverse 4-Amino-substituted 2-Phenyl-1,2,3,4-tetrahydroquinolines and 2-Phenylquinolines Based on a Multicomponent Imino Diels–Alder Reaction
作者:P. Prabhakara Varma、Bailure S. Sherigara、Kittappa M. Mahadevan、Vijaykumar Hulikal
DOI:10.1080/00397910903221035
日期:2010.7.12
A straightforward synthesis of new 1-(2-phenyl-1,2,3,4-tetrahydroquinolin-4-yl) pyrrolidin-2-ones/azepan-2-one from N-vinyl caprolactam/N-vinylpyrrolidin-2-one and N-benzylideneaniline via the imino Diels-Alder reaction has been reported for the first time. Antimony(III) chloride has been shown to effectively catalyze imino-Diels-Alder reaction to afford both 2-phenylquinoline and 2-phenyl-1,2,3,4-tetrahydroquinolin derivatives in excellent yields at ambient temperature. The cis diastereoselectivity to give cis 2-phenyl-1,2,3,4-tetrahydroquinolines is also highlighted in this reaction.
Cation Radical Aza-Diels-Alder Reaction between <i>N</i>-Arylimines and <i>N</i>-Vinyllactams: A Facile Synthesis of 4-Lactam-<i>N</i>-yl Tetrahydroquinolines
作者:Xiaodong Jia、Li Yang、Bing Han、Wei Zhang、Xiaoling Jin、Zhong-Li Liu
DOI:10.1055/s-2006-942521
日期:2006.9
Cycloaddition of N-arylimines with N-vinylpyrrolidin-2-one or N-vinylazepan-2-one was efficiently induced by tris(4-bromophenyl)aminium hexachloroantimonate producing stereoselectively the corresponding cis-2-aryl-4-(2-oxopyrrolidin-1-yl)- or cis-2-aryl-4-(2-oxoazepan-l-yl)tetrahydroquinoline derivative in good yields.