Novel one-pot access to 2-formyl/acetyl-1-substituted pyrrolo[2,3-b]quinoxalines under Sonogashira reaction conditions
摘要:
A one-pot reaction of N-alkyl-3-chloroquinoxaline-2-amines with acetylenic alcohols in the presence of a Pd-Cu catalyst leads to the formation of 2-formyl/acetyl-N-substituted pyrrolo[2,3-b]quinoxalines in good to high yields. A possible mechanism for the conversion has also been proposed.