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Societies and Academies

Nature volume 134, pages 262264 (18 August 1934) | Download Citation

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DUBLIN

Royal Irish Academy, June 25. SEAN P. O. RIOB-DAIN: Recent acquisitions from Co. Donegal in the National Museum. The paper deals with more than one hundred acquisitions obtained from Co. Donegal by the National Museum of Ireland during a period of about five years. Many of the Donegal finds were shown to be of unusual types in Irish archaeology and gave evidence of interesting connexions with other lands, the relationships with Scotland being particularly close. Several new burial -finds were described, and in a resume of bronze age burials a total of eight hitherto unpublished finds of food-vessels was brought to notice. Other discoveries of outstanding interest were a find of 108 amber beads (some with double perforation for use as ‘spacers'); a socketed bronze axe with an arrangement of circle and pellet ornament similar to Scottish examples; an unusual type of flat bronze dagger, and a remarkable large stone axe. From the later period a find of three silver bracelets of Norse workmanship was dealt with in connexion with similar finds from Great Britain and the Continent and with regard to the evidence of ancient silver mining in Ireland. JOSEPH ALGAB and K. J. HANWAY: Further studies in the synthesis of diflavones. (3-Diketones derived from diaceto-resorcinol-dimethyl ether may be prepared by condensing the latter substance with aromatic aldehydes in the presence of alcoholic sodium hydroxide to form dichalkones, such as dibenzylidene-diacetore-sorcinol dimethyl ether. These dichalkones, by addition of bromine, form tetrabromides and the latter, when heated with methyl alcoholic sodium methylate followed by treatment with hot aqueous hydrochloric acid, are converted into p-diketones of the type dibenzoylaceto-resorcinol dimethyl ether. While the procedure described affords a convenient route for the synthesis of (3-diketones from diacetore-sorcinol dimethyl ether, attempts to prepare diflavones from the diketones by the action of hot concentrated hydriodic’ acid, were not uniformly successful. In some cases the analytical results appeared to indicate that ring closure had occurred on one side only of the central nucleus and that the action of the hydriodic acid had resulted in ketonic hydrolysis of the second dike tone grouping with the production of a mono-flavone of the type 4'-7 dihydroxy-6-acetyl-flavone.

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https://doi.org/10.1038/134262a0

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