(Z)-Ethyl 2-phenyl-1-(2-vinylphenyl)vinylcarbamates. Part 1: Synthesis and preliminary studies on their divergent transformation into benzo[c]phenanthridines and 2-phenyl-1,4-naphthoquinones
作者:Mónica Treus、Cristian O. Salas、Marcos A. Gonazález、Juan C. Estévez、Ricardo A. Tapia、Ramón J. Estévez
DOI:10.1016/j.tet.2010.10.035
日期:2010.12
Treatment of N-carbethoxy-1-benzylideneisoquinolines with LDA gives N-ethoxycarbonyl-1-amino-1-(2-vinylphenyl)-2-phenylethylenes, which can easily be transformed into N-carbethoxy-1-amino-2-phenylnaphthalenes. Bischler-Napieralski reaction of these latter compounds affords the corresponding benzo[c]phenanthridines, while their hydrolysis and subsequent oxidation constitutes a novel route to 2-phenyl-1,4-naphthoquinones. (c) 2010 Elsevier Ltd. All rights reserved.
Reductive Formylation of Isoquinoline Derivatives with Formamide and Synthesis of 2-Formyltetrahydroisoquinolines
作者:Atanas P. Venkov、Ilian I. Ivanov
DOI:10.1080/00397919808006842
日期:1998.4
Reductive formylation of isoquinoline derivatives as 3,4-dihydroisoquinolines 1, enamines and enamides of tetrahydroisoquinoline 2 and the reaction of 2-(2-acylphenyl)ethylamides 3 with formamide afforded the corresponding N-formyltetrahydroisoquinolines 4 and N-acyltetrahydroisoquinolines 5.