Abstract
Annalen der Chemie und Pharmacie, September 1871.— Kochlin has continued his researches on “compounds of the camphor group.” By the action of nitric acid on camphor the author has obtained a new body, C9H12O5, which he calls camphoronic acid, and which has the property of forming salts in which H2 and H3 are replaced by metals. By distillation with potassic hydrate, butyric acid is produced; with bromine in presence of water camphoronic acid is oxidised, yielding oxy-camphoronic acid; this acid forms salts, in which H1, H2, and H3 are replaced by metals.—An important physiologico-chemical paper follows by Hlasiwetz and Habermann on “Proteids,” and a paper by Naumann on the length of time for the evaporation and condensation of solid bodies,” which, however, do not possess much general interest.—Bender contributes a paper on the “hydrate of magnesic oxychloride.” This substance, however, does not appear to be very stable, or to have very marked properties.—Mulder has experimented on allantoin and bodies derived therefrom; by the action of nitric acid two substances are obtained, allanic and alianturic acid.—An interesting paper on a new series of aromatic hydrocarbons, by Zincke, follows; by heating together benzol, benzyl-chloride and zinc powder, or finely divided copper, a reaction sets in with the evolution of hydrochloric acid gas, and the partial formation of a metallic chloride; the principal reaction seems to be, however, C7H7Cl + C6H6 = C13H13 + HCl. Benzyl-benzol is a solid crystalline body, melting at 26°—27°, and boiling at 261°—262°; by oxidation it is transformed into C13H10O, a crystalline body belonging to the monoclinic system, which fuses at 26°—26.5°. Benzophenoa, however, has the same composition, bat crystallises in the rhombic system, and fuses at 48°—49°. The body obtained above is therefore an isomeric benzophenon, it, however, easily passes into the modification fusing at 48°—49°. The composition of benzyl-benzol will therefore probably be C6H5—CH2— C6H5.— This number concludes with the translations of two papers by Messrs. Friswell and Armstrong respectively, which have already appeared in the English journals.
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Scientific Serials . Nature 5, 393–394 (1872). https://doi.org/10.1038/005393c0
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DOI: https://doi.org/10.1038/005393c0