A rapid and simple diversity-oriented synthesis of novel 3-amino-2′-oxospiro [benzo[c]pyrano[3,2-a]phenazine-1,3′-indoline]-2-carbonitrile/carboxylate derivatives via a one-pot, four-component domino reaction
作者:Gholam Hossein Mahdavinia、Maryam Mirzazadeh、Behrouz Notash
DOI:10.1016/j.tetlet.2013.04.082
日期:2013.7
An efficient regio- and chemoselective method for the synthesis of novel 3-amino-2′-oxospiro[benzo[c]pyrano[3,2-a]phenazine-1,3′-indoline]-2-carbonitrile/carboxylate derivatives has been developed via the one-pot, four-component domino coupling of 2-hydroxynaphthalene-1,4-dione, benzene-1,2-diamines, isatins, and malononitrile/cyanoacetic ester in the presence of DABCO under reflux conditions in excellent
一种有效的区域和化学选择方法,用于合成新型的3-氨基-2'-氧代螺并[苯并[ c ]吡喃并[3,2 - a ]吩嗪-1,3'-二氢吲哚] -2-腈/羧酸酯衍生物通过在回流条件下,在DABCO的存在下,在DABCO的存在下,通过一锅,四组分的2-羟基萘-1,4-二酮,苯-1,2-二胺,靛红和丙二腈/氰基乙酸酯的多米诺偶联反应开发。该级联形成两个CN键/ Knoevenagel缩合/ Michael加成/环化顺序的优点是其高原子经济性,优异的产率,产生五个新键的效率(两个C–N,两个C–C和一个C–O)和一个立体中心,只需一次操作。