Title: The unsuitability of ethanol as a solvent for the spectroscopic detection of functional groups in hydroxyflavones with aluminium chloride
Abstract: AlCl3 has proved useful as a chelatogenic reagent in the u.v. spectroscopic structure elucidation of flavonoids in alcohol solution. However, an apparent difference exists between ethanol and methanol solvents in their ability to stabilize aluminium complexes of flavonoids containing ortho-dihydroxyl groups. The present wor shows that, in fact, there is no difference between anhydrous ethanol and methanol as solvents, but that the presence of traces of water in ethanol (but not methanol) strongly inhibits complex formation. Methanol is therefore recommended as solvent for the u.v. spectroscopic analysis of flavonoids.
Publication Year: 1970
Publication Date: 1970-06-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 14
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