On Visnagin and Khellin and Related Compounds. A Simple Synthesis of Chromone
A Schönberg, A Sina
Index: Schoenberg; Sina Journal of the American Chemical Society, 1950 , vol. 72, p. 3396,3398
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Citation Number: 28
Abstract
Recently, Clarke and Robertson3 attempted to demethylate khellin by the action of hydriodic acid but did not succeed in obtaining the parent 5, 8-dihydroxy-2-methyl-furo-4', 5 '-6, 7- chromone (Ia). We have obtained this substance by heating khellin with magnesium iodide in the absence of a solvent, followed by hydrolysis with dilute sulfuric acid. Ia forms yellow crystals, soluble in alkali; on methylation with diazomethane in the presence of methyl ...
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