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Annulation of imidazolines with bis-electrophiles: Synthesis of imidazo[1,2-a]pyridines

✍ Scribed by Raymond C.F. Jones; Pravin Patel; Simon C Hirst; Mark J Smallridge

Book ID
104208600
Publisher
Elsevier Science
Year
1998
Tongue
French
Weight
681 KB
Volume
54
Category
Article
ISSN
0040-4020

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✦ Synopsis

ethoxycarbonylmethylene)-2,3,4,5-tetrahydroimidazole undergoes annulation with a variety of 1,3-bis-eleetrophiles (a,ll-unsaturated acid derivatives, 13-ketoesters, a, lt-unsaturated aldehydes) to form imidazo[l,2-a]pyridines.

πŸ“œ SIMILAR VOLUMES

ChemInform Abstract: Annulation of Imida
ChemInform Abstract: Annulation of Imidazolines with Bis-Electrophiles: Synthesis of Imidazo[1,2-a]pyridines.
✍ R. C. F. JONES; P. PATEL; S. C. HIRST; M. J. SMALLRIDGE πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons βš– 38 KB πŸ‘ 2 views

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a β€œFull Text” option. The original article is trackable v

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In 3-amino imidazopyridines, complete C(5) regiospecificity yielded corresponding TIBO-like derivatives (Β±)-3a, 6a and (Β±)-8a-c. The structures of these polycyclic compounds containing the azaindole moiety were determined by 1D and 2D NMR, and by X-ray crystallography.

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The synthesis of imidazo [1,2-a]pyridine and imidazo[1,2-a]pyrimidine derivatives by condensation between an a-bromoketone bound to solid support and various 2-aminopyridine or 2-aminopyrimidine derivatives was described. Either an acid labile linker or a base labile linker was used in this study.