Du Hui-r
2014
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Journal
Fine chemicals
Abstract
Versatile imidazo[1,2-a]pyridine carboxylic acid Ⅶ could be prepared in five steps from commercially available 2-amino pyridine.Alkylation /cyclization with methyl bromopyruvate,followed by selective chlorination with NCS and tandem Suzuki cross-coupling /hydrolysis,affords cyclopropane Ⅶ.The studies on the Suzuki cross-coupling /hydrolysis reaction conditions and catalysts were also carried out.