NDLI: Cu-Catalyzed Synthesis of Imidazo[1,2-a]pyridines from α-Diazoketones and 2-Aminopyridines

Content Provider	Scilit
Copyright Year	2007
Description	A synthesis of imidazo[1,2-a]pyridines by copper-catalyzed reaction of 2-aminopyridines with α-diazoketones is reported. The reaction proceeds in high yield under convenient and mild conditions from readily available starting materials. Although variation of $R^{4}$, including a chiral example, was moderately explored, pyridine substitution was poorly investigated. A plausible mechanism involving a copper triflate catalyzed condensation of the aniline with the diazoketone, and subsequent ring closure via ejection of nitrogen was proposed.
Related Links	http://www.thieme-connect.de/products/ejournals/pdf/10.1055/s-2007-991396.pdf
Ending Page	1251
Page Count	1
Starting Page	1251
ISSN	18611958
e-ISSN	1861194X
DOI	10.1055/s-2007-991396
Journal	Synfacts
Issue Number	12
Volume Number	2007
Language	English
Publisher	Georg Thieme Verlag KG
Publisher Date	2007-11-22
Access Restriction	Open
Subject Keyword	Journal: Synfacts Organic Chemistry
Content Type	Text
Resource Type	Article

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Cu-Catalyzed Synthesis of Imidazo[1,2-a]pyridines from α-Diazoketones and 2-Aminopyridines