Synthesis of novel fused azaheterocycles by photostimulated intramolecular SRN1 reactions with nitrogen nucleophiles
作者:Victoria A. Vaillard、María E. Budén、Sandra E. Martín、Roberto A. Rossi
DOI:10.1016/j.tetlet.2009.04.042
日期:2009.7
The synthesis of pyrrole, indole, and pyrazole fused azaheterocycles is presented. The anions of carboxamides (6 and 12) and pyrazolylamines (15a–b) react under photostimulation by an intramolecular SRN1 process to yield fused azaheterocycles with good to excellent yields. We report on an efficient two-step synthesis of new fused azaheterocycles derived from pyrrole, indole, and pyrazole, as well as
介绍了吡咯,吲哚和吡唑稠合的氮杂杂环的合成。羧酰胺(6和12)和吡唑基胺(15a–b)的阴离子在光刺激下通过分子内S RN 1过程反应,生成具有良好或优异收率的稠合氮杂杂环。我们报告了从吡咯,吲哚和吡唑衍生的新型稠合氮杂杂环的有效两步合成及其前体的合成。通过羧酰胺(6和12)和吡唑基胺(15a – b)与碱的反应,可以形成相应的阴离子。然后,通过分子内光刺激的S RN1个反应中,实现了稠合的氮杂杂环(54–100%)。