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A new application of solvatochromic pyridinium-N-phenolate betaine dyes: examining the electrophilicity of lanthanide shift reagents

✍ Scribed by Sergey V. Shekhovtsov; Nikolay O. Mchedlov-Petrossyan; Christian Reichardt

Book ID: 104097974
Publisher: Elsevier Science
Year: 2010
Tongue: French
Weight: 294 KB
Volume: 51
Category: Article
ISSN: 0040-4039
DOI: 10.1016/j.tetlet.2010.06.057

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✦ Synopsis

The well-known solvent polarity indicators, pyridinium-N-phenolate betaine dyes, appeared to be promising reactants for comparing the electrophilicity of NMR chemical shift reagents such as lanthanide(III) complexes with dipivaloylmethane [tris (2,2,6,6-tetramethylheptan-3,5-dione)]. These dyes are suitable for the UV-vis spectroscopic study of weak specific Lewis acid/base interactions in solution.

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