Chemistry of the Aliphatic Series

Chemistry of the Aliphatic Series

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 edition. Excerpt: ...corresponding to diethylene oxide: Method: of Formatz'on.--The first three methods proceed from the olefines, and lead, according to the constitution of the latter, to glycols of every description. The halogen addition products of the olefines--the alkylen haloids----may be regarded as the lzaloid acid esters of the glycols. When these are acted upon by alkalies, with the purpose of exchanging hydroxyl for their halogen, they split off a halogen hydride and pass first into monohalogen olefines and then into acetylenes. It was Wiirtz who observed that it was only necessary to treat the alkylen haloids with acetates in order to reach the acetic esters of the glycols, and then, by saponification with alkalies, to obtain the glycols. (1) By heating the alkylen haloids (p..102) with silver acetate (and glacial acetic acid), or with potassium acetate in alcoholic solution: c, r-1,1, + 2c, H, o, .Ag = C, H48: + 2Ag1. Ethylene Diacetate. Inasmuch as the alkylens are made from monohydric alcohols by the withdrawal of water, and are transformed by the addition of halogens into alkylen haloids, the preceding reaction may be regarded as a method of converting monohydric alcohols into dihydric alcohols or glycols. The resulting acetic esters are purified by distillation, and then saponified by KOH or baryta water: A direct conversion of alkylen haloids into glycols may be attained by beating them with water (A.:86, 293), with water and lead oxide, or sodium and potassium carbonate. (2) Another procedure consists in shaking the alkylens, CnH2n, with aqueous hypochlorous acid, and afterward decomposing the chlorhydrins formed with moist silver oxide: (4) By the action of nitrous acid on diamines (p. 166). As these diamines can be obtained from the...
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Product details

  • Paperback | 222 pages
  • 189 x 246 x 12mm | 404g
  • United States
  • English
  • black & white illustrations
  • 1236764722
  • 9781236764720