作者:Elliott Huntsman、Jaume Balsells
DOI:10.1002/ejoc.200500247
日期:2005.9
[1,2,4]Triazolo[1,5-a]pyridines without substituents on the 2-position have been prepared from 2-aminopyridines by cyclization of N-(pyrid-2-yl)formamidoximes with trifluoroacetic anhydride. Triazoles substituted at any position on the pyridine ring may be prepared in good yields and under mild reaction conditions. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
2-位无取代基的[1,2,4]三唑并[1,5-a]吡啶已通过N-(吡啶-2-基)甲脒与三氟乙酸酐的环化反应由2-氨基吡啶制备。可以在温和的反应条件下以良好的产率制备在吡啶环上任何位置取代的三唑。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)