Preparation of 2‐aryl and 2‐aryloxymethyl imidazo[1,2‐a]pyridines and related compounds

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Abstract
A series of substituted 2‐aryl imidazo[1,2‐a]pyridines has been prepared in which a variety of substituents are introduced on the 4′‐position of the phenyl ring and on the 3, 5, 6 or 7 position of the heterocyclic ring. Most examples have acetamido, bromo, cyano, or formyl substituents at the 4′‐position. Analogous imidazo‐[2,1‐b]fhiazoles and imidazo[1,2‐a]pyrimidines have also been prepared. Another series of compounds consisting of 4′‐formylphenoxymethyl derivatives of imidazole, the three positional isomers of pyridine, thiazole, benzimidazole and ring‐substituted imidazo[1,2‐a]pyridines has been prepared. 2‐(4′‐Formylphenylethenyl) derivatives of imidazole and imidazo[1,2‐a]pyridine were also prepared.

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