Synthesis of Unexpected Pyrrolo[2,3-b]quinoxaline-2-carbaldehydes via Sonogashira Coupling Reaction
作者:Ali Keivanloo、Mohammad Bakherad、Amin Rahimi
DOI:10.1055/s-0029-1218715
日期:2010.5
The reaction of a number of N-alkyl-3-chloroquinoxaline-2-amines with propargyl bromide in the presence of PdCl2(PPh3)2 and copper(I) iodide in wet morpholine leads to the formation of the unexpected N-substituted pyrrolo[2,3-b]quinoxaline-2-carbaldehydes in good yields. A possible mechanism for the conversion is suggested.
在湿吗啉中,PdCl2(PPh3)2 和碘化铜(I)存在下,一些 N-烷基-3-氯喹喔啉-2-胺与丙炔溴反应,生成了意想不到的 N-取代的吡咯并[2,3-b]喹喔啉-2-羰基醛,收率很高。本文提出了一种可能的转化机制。