6-Nitro-1,2,3,4-tetrahydroquinolines by a tandem reductive amination-S<sub>N</sub>Ar reaction
作者:Richard A. Bunce、Takahiro Nago
DOI:10.1002/jhet.5570450433
日期:2008.7
A tandem reductive amination-SNAr reaction has been developed for the synthesis of 6-nitro-1,2,3,4-tetrahydroquinolines. Treatment of 4-(2-fluoro-5-nitrophenyl)-2-butanone or 3-(2-fluoro-5-nitrophenyl)-propanal with primary amines and sodium cyanoborohydride in methanol at room temperature provided good to excellent yields of the substituted tetrahydroquinolines. The reaction proceeded best with the
一种串联还原胺化-S Ñ氩反应已发展为6-硝基-1,2,3,4-四氢喹啉的合成。在室温下在甲醇中用伯胺和氰基硼氢化钠处理4-(2-氟-5-硝基苯基)-2-丁酮或3-(2-氟-5-硝基苯基)-丙醛提供了优异的优良取代基收率四氢喹啉。使用在α-碳上未分支的伯胺,反应在酮底物上进行得最好。醛还产生目标杂环,但这些杂环伴随有10-15%的未环化侧链还原胺化产物。