Regioselective C2-arylation of imidazo[4,5-b]pyridines
We show that N3-MEM-protected imidazo[4,5-b]pyridines undergo efficient C2-functionalisation via direct C-H arylation. Twenty-two substituted imidazo[4,5-b]pyridines are prepared and iterative, selective elaboration of functionalised imidazo[4,5-b]pyridin
PREPARATION OF 2-ARYL-SUBSTITUTED IMIDAZOPYRIDINES AND IMIDAZOPYRIDINES
It is proposed that sulfur be used as the oxidizing agent in the synthesis of 2-arylimidazopyridines from o-diaminopyridines and aromatic (heteroaromatic) aldehydes.Benzyl alcohols and benzylpyridinium salts can be used in place of aldehydes. 2-Phenylimid
Yutilov, Yu. M.,Shcherbina, L. I.
p. 529 - 535
(2007/10/02)
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