N-Arylphthalimides can be converted to isoindoles by a two electron reduction and silylation. Cycloaddition with acetylenic dienophiles leads to naphthoquinonemonoimines, which show absorption maxima in the NIR region up to 800 nm.
New Synthesis of Pyrido[2,3-<i>d</i>] and [3,2-<i>d</i>]Oxazines
作者:Amin F. Fahmy、Jürgen Sauer、Mohamed Salah K.Youssef、Mohamed Said AbdelHalim、Mamdouh A. Hassan
DOI:10.1080/00397919808004864
日期:1998.8
Abstract N-Hydroxyquinolinimide 1 reacts with each of aromatic amines, hydrazine hydrate and aromatic hydrocarbons to give arylcarbamoyl pyridines 2, pyrrolopyridines 3, pyridopyridazines 4 and pyridooxazinones 5 and 6. The heterocycles 5 and 6 can be transformed to the condensed systems, triazolopyridopyridazines 14 and 15 through series of reactions.