One-pot synthesis of 1,2-disubstituted pyrrolo[2,3-b]quinoxalines via palladium-catalyzed heteroannulation in water
作者:Ali Keivanloo、Mohammad Bakherad、Amin Rahimi、Sayed Ali Naghi Taheri
DOI:10.1016/j.tetlet.2010.02.123
日期:2010.5
N-alkyl-3-chloroquinoxaline-2-amines with 1-alkynes, catalyzed by Pd–Cu, in the presence of sodium lauryl sulfate as the surfactant in water, leads to the one-pot formation of 1,2-disubstituted pyrrolo[2,3-b]quinoxalines in good-to-high yields.
在水中十二烷基硫酸钠作为表面活性剂的情况下,在钯-铜催化下,N-烷基-3-氯喹喔啉-2-胺与1-炔烃的反应导致一锅法形成1,2-双取代吡咯并[2,3- b ]喹喔啉类化合物,收率高至高。
Novel one-pot access to 2-formyl/acetyl-1-substituted pyrrolo[2,3-b]quinoxalines under Sonogashira reaction conditions
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.
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.