- Preparation of fully substituted anilines for the synthesis of functionalized indoles
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A wide range of highly functionalized indoles were prepared by the successive magnesiation of readily available o-alkynyl protected anilines using TMPMgCl·LiCl or LDA, followed by a KH-mediated cyclization reaction.
- Stoll, Armin H.,Knochel, Paul
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p. 113 - 116
(2008/04/12)
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- The Bamberger reaction in hydrogen fluoride: the use of mild reductive metals for the preparation of fluoroaromatic amines
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The reduction of nitroaromatic compounds by various metals (tin, lead, bismuth) in liquid hydrogen fluoride under an inert atmosphere leads to fluoroaromatic amines, in accord with the Bamberger reaction.Generally, a co-solvent such as pentane or methylene chloride is used.Some non-fluorinated arylamines are also formed by a competitive direct reduction of the N-arylhydroxylamine intermediate.Of the mild reductive metals studied, bismuth was the most selective. - Keywords: Bamberger reaction; Hydrogen fluoride; Mild reductive metals; Fluoroaromatic amines; NMR spectroscopy
- Tordeux, Marc,Wakselman, Claude
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p. 251 - 254
(2007/10/03)
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