Divergent sequential reactions of β-(2-aminophenyl)-α,β-ynones with nitrogen nucleophiles
作者:Elisabetta Rossi、Giorgio Abbiati、Valentina Canevari、Donatella Nava、Antonio Arcadi
DOI:10.1016/j.tet.2004.09.082
日期:2004.12
with nitrogen nucleophiles to give three major types of products, depending on reaction conditions and variation in the nucleophiles. The reaction may lead to simple 1,2-nucleophilic adducts or, at higher temperatures, to a divergent sequential cyclisation giving rise to 2-aryl-4-aminoquinolines by reaction with amines, or to substituted 2-aryl or 2-alkyl-4-alkylidene quinazolines by reaction with
根据反应条件和亲核试剂的变化,β-(2-氨基苯基)-α,β-炔酮容易与氮亲核试剂反应生成三种主要类型的产物。该反应可导致简单的1,2-亲核加合物,或在较高温度下,通过与胺反应生成不同的顺序环化反应,生成2-芳基-4-氨基喹啉,或取代的2-芳基或2-烷基-4 -亚烷基喹唑啉与am反应。后者也可以通过β-(2-氨基苯基)-α,β-炔酮与亚氨基氯化物的反应合成。