Photochemically Promoted Aza-Diels–Alder-Type Reaction: High Catalytic Activity of the Cr(III)/Bipyridine Complex Enhanced by Visible Light Irradiation
作者:Noriyoshi Arai、Takeshi Ohkuma
DOI:10.1021/acs.joc.7b00838
日期:2017.7.21
Aza-Diels–Alder-type cycloaddition reactions between a range of N-arylimines and functionalized alkenes were effectively catalyzed by the Cr(III)/bipyridine complex under irradiation of blue light, to give the corresponding 1,2,3,4-tetrahydroquinoline derivatives in high yields with excellent diastereoselectivity. Typically, the reaction of benzylideneaniline with 1-vinyl-2-pyrrolidinone proceeded
5-Amido- and 5-Amino-Substituted Epoxyisoindolo[2,1-<i>a</i>]tetrahydroquinolines and 10-Carboxylic Acids: Their Synthesis and Reactivity
作者:Vladimir P. Zaytsev、Fedor I. Zubkov、Flavien A. A. Toze、Daria N. Orlova、Maria N. Eliseeva、Dmitry G. Grudinin、Eugeniya V. Nikitina、Alexey V. Varlamov
DOI:10.1002/jhet.1024
日期:2013.2
was shown that the initial N-acylation of the tetrahydroquinolines was followed by a spontaneous [4+2]-cycloaddition of an N-acryloyl substituent to the furan ring. It was established that the intramolecular Diels–Alder reaction of furans is reversible, occurs stereoselectively as exo-addition, and led to target epoxyisoindolo[2,1-a]tetrahydroquinolines with moderate yields. Oxidation and aromatization
New synthetic approach to epoxyisoindolo[2,1-a]quinolines based on cycloaddition reactions of 2-furyl-substituted tetrahydroquinolines with maleic anhydride and acryloyl chloride
作者:F. I. Zubkov、V. P. Zaitsev、A. S. Peregudov、N. M. Mikhailova、A. V. Varlamov
DOI:10.1007/s11172-007-0159-0
日期:2007.5
A procedure was developed for the synthesis of hydrogenated furyl-substituted furo[3,2-c]quinolines, pyrano[3,2-c]quinolines, and 4-ethoxy-and 4-(2-oxopyrrolidin-1-yl)quinolines. The reactions of these compounds with acryloyl chloride and maleic anhydride produce epoxyisoindolo[2,1-a]quinoline derivatives through successive acylation at the quinoline nitrogen atom and intramolecular exo-[4+2]-cycloaddition at the furan moiety.