Journal of the Chemical Society 1899/I. [antikvár]

JOURNALofTHE CHEMICAL SOCIETY.ABSTRACTS OF CHEMICAL PAPERS PUBLISHED IN BRITISH AND FOREIGN JOURNALS.PART I.i.ifOrganic Chemistry.Bromination with Aluminium Bromide in the Aliphatic Series. By A. Mouneybat {Compt. rend., 1898, 127, 109111. Compare Abstr., 1898, i, 613).Aluminium bromide behaves as a powerful brominating agent, because, like aluminium chloride, it has the property of producing double linkings in alkylic haloids. When it is heated with dry ethylenic dibromide, hydrogen bromide and acetylene are obtained, and if bromine is also present, this combines additively with the unsaturated compound thus produced. The author shows that, by means of aluminium bromide, ethylic bromide can be successively converted into ethylenic dibromide, acetylene tetra-bromide, and hexabromethane. By this method, hexabromethane is most readily prepared from acetylene tetrabromide, the yield obtained being 6570 per cent.G. T. M.Action of Chloroform on Aqueous Alkali. By Johannes Thiele and Fkankland Dent {Annalen, 1898, 302, 273274 Compare Desgrez, Abstr., 1898, i, 166).Geuther has observed that chloroform yields carbonic oxide with aqueous and alcoholic alkalis {Annalen, 1862, 123, 121); under conditions described by the authors, it is found that quantities of chloroform varying between 21 per cent, and 66 per cent, are convertible into formic acid through the action of caustic soda.M. 0. F.Decomposition of Iodoform Solutions. By J. Bougault {J. Pharm., 1898, [vi], 8, 213214).On exposing a sealed glass vessel containing a solution of iodoform in ether together with mercury or centinormal .aqueous sodium thiosulphate to bright sunlight, iodine is initially liberated in the ethereal layer 3 on shaking,vol. lxxvi. i.hi.'t: