Directed solid-phase synthesis of trisubstituted imidazo[4,5-c]pyridines and imidazo[4,5-b]pyridines.

Abstract:

:An efficient method is described for the solid-supported synthesis of imidazo[4,5-b]pyridines and imidazo[4,5-c]pyridines from 2,4-dichloro-3-nitropyridine. The key pyridine building block was reacted with polymer-supported amines, followed by replacement of the second chlorine with amines, nitro group reduction, and imidazole ring closure with aldehydes. Depending on the combination of polymer-supported and solution-phase reagents, the strategy allowed for the simple preparation of the target trisubstituted derivatives with variable positioning of the pyridine nitrogen atom. Additionally, after a slight modification of the method, the preparation of strictly isomeric imidazopyridines was possible.

journal_name

ACS Comb Sci

authors

Lemrová B,Smyslová P,Popa I,Oždian T,Zajdel P,Soural M

doi

10.1021/co500090t

subject

Has Abstract

pub_date

2014-10-13 00:00:00

pages

558-65

issue

10

eissn

2156-8952

issn

2156-8944

journal_volume

16

pub_type

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