Sentence Examples


  • Zelinsky, Ber., 1901, 34, p. 3 2 49); and by eliminating the halogen acid from monoor di-halogen polymethylene compounds by heating them with quinoline.
  • His chief researches deal with the polymethylene compounds, the alkaloids, in particular hydrastine and berberine, and the camphors and terpenes.
  • Into two groups: (r) those exhibiting properties closely analogous to the aliphatic series - the polymethylenes, and (2) a series exhibiting properties differing in many respects from the aliphatic and polymethylene compounds, and characterized by a peculiar stability which is to be associated with the disposition of certain carbon valencies not saturated by hydrogen - the " aromatic series."
  • And >- CH, the first characterizing the polymethylene and reduced heterocyclic compounds, the second true aromatic compounds.
  • A great impetus was given to the study of polymethylene derivatives by the important and unexpected observation made by W.
 

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