Tetrahedron Letters

Determination of the absolute configuration and identity of chiral carboxylic acids using a Cu (II) complex of pyridine–benzimidazole-based ligand

S Zhao, S Ito, Y Ohba, H Katagiri

Index: Zhao, Shuang; Ito, Shintaro; Ohba, Yoshihiro; Katagiri, Hiroshi Tetrahedron Letters, 2014 , vol. 55, # 13 p. 2097 - 2100

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Abstract

Abstract We report a new achiral Cu host [Cu (bmb–bpy)(H 2 O)(OTf) 2](bmb–bpy= 6, 6′- bis [((1-methylbenzimidazol-2-yl) thio) methyl]-2, 2′-bipyridine) for the enantioselective and chemoselective recognition of chiral carboxylic acids. The binding of chiral carboxylic acids to [Cu (bmb–bpy)(H 2 O)(OTf) 2] produced an exciton-coupled circular dichroism signal; the linear discriminant analysis allowed the assignment of the absolute configuration, ...

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